preamble attached >>>
ADs updated daily at www.Tdata.com
PROPOSED AD PIAGGIO AERO INDUSTRIES S.P.A: Docket No. FAA-2022-0452; Project Identifier MCAI-2021-01356-A.
(a) COMMENTS DUE DATE

    The FAA must receive comments on this airworthiness directive (AD)  by
    May 26, 2022.

(b) AFFECTED ADS

    None.

(c) APPLICABILITY

    This  AD  applies  to  Piaggio Aero Industries S.p.A  Model P-180 air-
    planes, all serial numbers (S/Ns), certificated in any category.

(d) SUBJECT

    Joint Aircraft System Component (JASC) Code 3411, Pitot/Static System.

(e) UNSAFE CONDITION

    This AD was prompted by mandatory continuing airworthiness information
    (MCAI)  originated  by an  aviation  authority of  another  country to
    identify and correct an unsafe  condition on an aviation product.  The
    MCAI  identifies the  unsafe condition  as accumulation  of water  and
    subsequent freezing in the pitot-tube.  The FAA is issuing this  AD to
    prevent  blockage  of the  pitot-tube.  The unsafe  condition,  if not
    addressed, could  result in  temporary air  data indications  failure,
    which could result in loss of control of the airplane.

(f) COMPLIANCE

    Comply  with this  AD within  the compliance  times specified,  unless
    already done.

(g) REQUIRED ACTIONS

(1) For all airplanes: Within 30 days after the effective date of this AD,
    revise the existing airplane flight manual (AFM) for your airplane  by
    adding into  the Emergency  Procedures and  Normal Procedures sections
    the information in Piaggio Aviation P.180 AVANTI Temporary Change  No.
    36, dated April 11, 2019; or by incorporating into the Limitations and
    Normal Procedures sections the  information in Piaggio Aviation  P.180
    Avanti II/EVO Temporary  Change No. 79,  dated September 17,  2018; as
    applicable  to  your airplane  S/N.  Using a  different  document with
    language identical to that in Piaggio Aviation P.180 AVANTI  Temporary
    Change No. 36, dated April 11, 2019; or Piaggio Aviation P.180  Avanti
    II/EVO  Temporary  Change  No.  79,  dated  September  17,  2018,   is
    acceptable for compliance with this requirement.

(2) For airplanes identified  in paragraph (g)(2)(i) and (ii)  of this AD:
    Within 660  hours time-in-service  (TIS) after  the effective  date of
    this AD or 24  months after the effective  date of this AD,  whichever
    occurs  first, modify  the total  air temperature  (TAT) probe  heater
    electrical  circuit  by  following  the  Accomplishment  Instructions,
    paragraphs (6) through (27), in Piaggio Aero Industries S.p.A. Service
    Bulletin No. 80-0457, Revision 1, dated February 12, 2020.

(i) S/N 1105,  if  Piaggio Aero Industries  Service Bulletin  No. 80-0454,
    Revision 0, dated March 6, 2017, is not incorporated; and

(ii) S/Ns 1106 through 1234  inclusive,  if Piaggio Aero Industries S.p.A.
     Service Bulletin No. 80-0425,  Revision 2, dated June 4, 2018, is not
     incorporated.

(3) For airplanes identified in paragraphs (g)(3)(i) through (iii) of this
    AD: Within 660 hours TIS  after  the  effective date of this AD  or 24
    months after the effective date of this AD,  whichever  occurs  first,
    modify the TAT probe heater electrical circuit by following the Accom-
    plishment Instructions, paragraphs (6) through (21),  in Piaggio Avia-
    tion S.p.A. Service Bulletin No. 80-0430,  Revision 1, dated April 30,
    2019.

(i) S/Ns 1002, 3001, 3003, 3004, 3006, and 3007;

(ii) S/N 1105,  if Piaggio Aero Industries  Service Bulletin  No. 80-0454,
     Revision 0, dated March 6, 2017, is incorporated; and

(iii) S/Ns 1106 through 1234 inclusive,  if Piaggio Aero Industries S.p.A.
      Service Bulletin No. 80-0425, Revision 2, dated June 4, 2018, is in-
      corporated.

(h) CREDIT FOR PREVIOUS ACTIONS

    This paragraph provides credit for the modification  required by para-
    graph (g)(3) of this AD,  if  the  modification  was  done  before the
    effective date of this AD  using Piaggio Aviation Service Bulletin No.
    80-0430, Revision 0, dated August 10, 2017.

(i) ALTERNATIVE METHODS OF COMPLIANCE (AMOCS)

(1) The Manager, International Validation Branch,  FAA,  has the authority
    to approve AMOCs for this AD, if requested using the procedures  found
    in 14 CFR 39.19. In accordance with 14 CFR 39.19, send your request to
    your principal inspector or local Flight Standards District Office, as
    appropriate. If  sending information  directly to  the manager  of the
    certification  office,  send  it  to  the  attention  of  the   person
    identified in paragraph (j)(1) of this AD and email to: 9-AVS-AIR-730-
    AMOC@faa.gov.

(2) Before using any approved AMOC,  notify your appropriate principal in-
    spector, or lacking  a principal inspector,  the manager of  the local
    flight standards district office/certificate holding district office.

(j) RELATED INFORMATION

(1) For more  information  about this AD,  contact  Mike Kiesov,  Aviation
    Safety Engineer,  General Aviation & Rotorcraft Section, International
    Validation Branch,  FAA,  901 Locust, Room 301, Kansas City, MO 64106;
    phone: (816) 329-4144; email: mike.kiesov@faa.gov.

(2) Refer  to  European Union Aviation Safety Agency  (EASA) AD 2019-0144,
    dated June 19, 2019, for more information. You may examine the EASA AD
    in the AD docket  at https://www.regulations.gov  by searching for and
    locating Docket No. FAA-2022-0452.

(3) For service information  identified in this AD,  contact  Piaggio Aero
    Industries  S.p.A,  P-180  Customer  Support,  Via Pioieri  e Aviatori
    d'Italia snc,  16154 Genoa,  Italy;  phone:  +39 010 099 8400;  email:
    technicalsupport@piaggioaviation.it;   website:  https://www.technical
    support@piaggioaerospace.it.com. You may view this service information
    at the FAA, Airworthiness Products Section, Operational Safety Branch,
    901 Locust, Kansas City, MO 64106. For information on the availability
    of this material at the FAA, call (817) 222-5110.

Issued on April 5, 2022. Ross Landes, Deputy Director for Regulatory Oper-
ations, Compliance & Airworthiness Division,  Aircraft Certification Serv-
ice.

DATES: The FAA must receive comments on this proposed AD by May 26, 2022.
PREAMBLE 

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2022-0452; Project Identifier MCAI-2021-01356-A]
RIN 2120-AA64

Airworthiness Directives; Piaggio Aero Industries S.p.A Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Notice of proposed rulemaking (NPRM).

-----------------------------------------------------------------------

SUMMARY: The FAA proposes to adopt a new airworthiness directive (AD)
for certain Piaggio Aero Industries S.p.A (Piaggio) Model P-180
airplanes. This proposed AD results from mandatory continuing
airworthiness information (MCAI) originated by an aviation authority of
another country to identify and correct an unsafe condition on an
aviation product. The MCAI identifies the unsafe condition as
accumulation of water and subsequent freezing in the pitot-tube, which
results in pitot-tube blockage. This proposed AD would require
modifying the total air temperature (TAT) probe heater electrical
circuit and revising your existing airplane flight manual (AFM). The
FAA is proposing this AD to address the unsafe condition on these
products.

DATES: The FAA must receive comments on this proposed AD by May 26,
2022.

ADDRESSES: You may send comments, using the procedures found in 14 CFR
11.43 and 11.45, by any of the following methods:
Federal eRulemaking Portal: Go to https://www.regulations.gov. Follow the instructions
for submitting comments.
Fax: (202) 493-2251.
Mail: U.S. Department of Transportation, Docket
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New
Jersey Avenue SE, Washington, DC 20590.
Hand Delivery: Deliver to Mail address above between 9
a.m. and 5 p.m., Monday through Friday, except Federal holidays.
For service information identified in this NPRM, contact Piaggio
Aero Industries S.p.A, P-180 Customer Support, Via Pioieri e Aviatori
d'Italia snc, 16154 Genoa, Italy; phone: +39 010 099 8400; email:
technicalsupport@piaggioaviation.it; website: https://www.technicalsupport@piaggioaerospace.it.com. You may view this service
information at the FAA, Airworthiness Products Section, Operational
Safety Branch, 901 Locust, Kansas City, MO 64106. For information on
the availability of this material at the FAA, call (817) 222-5110.

Examining the AD Docket

You may examine the AD docket at https://www.regulations.gov by
searching for and locating Docket No. FAA-2022-0452; or in person at
Docket Operations between 9 a.m. and 5 p.m., Monday through Friday,
except Federal holidays. The AD docket contains this NPRM, the MCAI,
any comments received, and other information. The street address for
Docket Operations is listed above.

FOR FURTHER INFORMATION CONTACT: Mike Kiesov, Aviation Safety Engineer,
General Aviation & Rotorcraft Section, International Validation Branch,
FAA, 901 Locust, Room 301, Kansas City, MO 64106; phone: (816) 329-
4144; email: mike.kiesov@faa.gov.

SUPPLEMENTARY INFORMATION:

Comments Invited

The FAA invites you to send any written relevant data, views, or
arguments about this proposal. Send your comments to an address listed
under ADDRESSES. Include ``Docket No. FAA-2022-0452; Project Identifier
MCAI-2021-01356-A'' at the beginning of your comments. The most helpful
comments reference a specific portion of the proposal, explain the
reason for any recommended change, and include supporting data. The FAA
will consider all comments received by the closing date and may amend
this proposal because of those comments.
Except for Confidential Business Information (CBI) as described in
the following paragraph, and other information as described in 14 CFR
11.35, the FAA will post all comments received, without change, to
https://www.regulations.gov, including any personal information you
provide. The agency will also post a report summarizing each
substantive verbal contact received about this NPRM.

Confidential Business Information

CBI is commercial or financial information that is both customarily
and actually treated as private by its owner. Under the Freedom of
Information Act (FOIA) (5 U.S.C. 552), CBI is exempt from public
disclosure. If your comments responsive to this NPRM contain commercial
or financial information that is customarily treated as private, that
you actually treat as private, and that is relevant or responsive to
this NPRM, it is important that you clearly designate the submitted
comments as CBI. Please mark each page of your submission containing
CBI as ``PROPIN.'' The FAA will treat such marked submissions as
confidential under the FOIA, and they will not be placed in the public
docket of this NPRM. Submissions containing CBI should be sent to Mike
Kiesov, Aviation Safety Engineer, General Aviation & Rotorcraft
Section, International Validation Branch, FAA, 901 Locust, Room 301,
Kansas City, MO 64106. Any commentary that the FAA receives which is
not specifically designated as CBI will be placed in the public docket
for this rulemaking.

Background

The European Union Aviation Safety Agency (EASA), which is the
Technical Agent for the Member States of the European Union, has issued
EASA AD 2019-0144, dated June 19, 2019 (referred to after this as ``the
MCAI''), to address an unsafe condition on all Piaggio Model P.180
Avanti and Avanti II airplanes. The MCAI states:

Occurrences of pitot-tube blockage were reported, leading to in-
flight air data loss. Investigation results indicated that
accumulation of water and subsequent freezing was the failure cause.
This condition, if not corrected, could lead to unreliable
indication or loss of in-flight air data provided by systems
deriving their data from measuring air pressure, possibly resulting
in loss of control of the aeroplane.
To address this potentially unsafe condition, Piaggio issued the
applicable AFM TC [Piaggio Aviation P.180 AVANTI II/EVO Temporary
Change 79, dated September 17, 2018; and Piaggio Aviation P.180
AVANTI Temporary Change No. 36 and No. 79], providing instructions
to switch on pitot-tube heater before taxi if operation in heavy
rain, snow or icing condition is expected. To prevent concurrent
activation of TAT probe heater on ground, which could lead to
temporary air data indications failure, Piaggio issued the
applicable SBs [Piaggio Service Bulletin No. 80-0430 Revision 1 and
Piaggio Service Bulletin No. 80-0457, original issue], providing
modification instructions to inhibit on-ground power supply to TAT
probe heater, when the pitot-tube heater is activated.
For the reasons described above, this [EASA] AD requires
amendment of the applicable AFM and, for certain aeroplanes,
modification of the TAT probe heater electrical circuit.

You may examine the MCAI in the AD docket at https://www.regulations.gov by
searching for and locating Docket No. FAA-2022-0452.

Related Service Information Under 1 CFR Part 51

The FAA reviewed Piaggio Aviation S.p.A. Service Bulletin No. 80-
0430, Revision 1, dated April 30, 2019; and Piaggio Aero Industries
S.p.A. Service Bulletin No. 80-0457, Revision 1, dated February 12,
2020. These service bulletins specify procedures for modifying the TAT
heater circuit in order to inhibit its engagement on the ground when
the pitot heater is turned on. These documents are distinct because
they apply to airplanes in different configurations.
The FAA reviewed Piaggio Aviation P.180 AVANTI II/EVO Temporary
Change No. 79, dated September 17, 2018. Temporary Change (TC) 79
revises the Limitations and Normal Procedures sections of the existing
AFM to include updated procedures for airplane operation when the
modification for inhibition of the TAT heater (on ground) has been
installed.
The FAA also reviewed Piaggio Aviation P.180 AVANTI Temporary
Change No. 36, dated April 11, 2019. TC 36 revises the Emergency and
Normal Procedures sections of the existing AFM to include additional
procedures to avoid air data computer (ADC) failure due to water
trapped and frozen in pitot lines.
This service information is reasonably available because the
interested parties have access to it through their normal course of
business or by the means identified in the ADDRESSES section.

Other Related Service Information


The FAA reviewed Piaggio Aero Industries Service Bulletin No. 80-
0454, Revision 0, dated March 6, 2017; Piaggio Aero Industries S.p.A.
Service Bulletin No. 80-0425, Revision 0, dated May 30, 2017; and
Piaggio Aero Industries S.p.A. Service Bulletin No. 80-0425, Revision
2, dated June 4, 2018. This service information specifies procedures
for replacing the Messier-Dowty nose and main landing gear and steering
system with a Magnaghi nose and main landing gear and Eaton steering
system.
The FAA also reviewed Piaggio Aero Industries S.p.A. Service
Bulletin No. 80-0430, Revision 0, dated August 10, 2017. This service
information specifies procedures for modifying the TAT heater circuit
in order to inhibit its engagement on the ground when the pitot heater
is turned on.

FAA's Determination

This product has been approved by the aviation authority of another
country and is approved for operation in the United States. Pursuant to
the FAA's bilateral agreement with this State of Design Authority, it
has notified the FAA of the unsafe condition described in the MCAI and
service information referenced above. The FAA is issuing this NPRM
after determining the unsafe condition described previously is likely
to exist or develop on other products of the same type design.

Proposed AD Requirements in This NPRM

This proposed AD would require accomplishing the actions specified
in the service information already described.

Differences Between This Proposed AD and the MCAI

The MCAI requires informing all flight crews of the AFM revisions
and operating accordingly thereafter, and this proposed AD would not
because those actions are already required by FAA operating
regulations.

Costs of Compliance

The FAA estimates that this AD, if adopted as proposed, would
affect 101 airplanes of U.S. registry. The FAA estimates the following
costs to comply with this proposed AD:

Estimated Costs

Action Labor cost Parts cost Cost per airplane Cost on U.S. operators
Modify TAT probe heater electrical circuit 42 work-hours x $85 per hour = $3,570 Up to $3,632 Up to $7,202 Up to $496,938 (69 airplanes)
Revise AFM 1 work-hour x $85 per hour = $85 Not Applicable $85 $8,585 (101 airplanes)

Authority for This Rulemaking

Title 49 of the United States Code specifies the FAA's authority to
issue rules on aviation safety. Subtitle I, section 106, describes the
authority of the FAA Administrator. Subtitle VII: Aviation Programs,
describes in more detail the scope of the Agency's authority.
The FAA is issuing this rulemaking under the authority described in
Subtitle VII, Part A, Subpart III, Section 44701: General requirements.
Under that section, Congress charges the FAA with promoting safe flight
of civil aircraft in air commerce by prescribing regulations for
practices, methods, and procedures the Administrator finds necessary
for safety in air commerce. This regulation is within the scope of that
authority because it addresses an unsafe condition that is likely to
exist or develop on products identified in this rulemaking action.

Regulatory Findings

The FAA determined that this proposed AD would not have federalism
implications under Executive Order 13132. This proposed AD would not
have a substantial direct effect on the States, on the relationship
between the national government and the States, or on the distribution
of power and responsibilities among the various levels of government.
For the reasons discussed above, I certify this proposed
regulation:
(1) Is not a ``significant regulatory action'' under Executive
Order 12866,
(2) Would not affect intrastate aviation in Alaska, and
(3) Would not have a significant economic impact, positive or
negative, on a substantial number of small entities under the criteria
of the Regulatory Flexibility Act.

List of Subjects in 14 CFR Part 39

Air transportation, Aircraft, Aviation safety, Incorporation by
reference, Safety.

The Proposed Amendment

Accordingly, under the authority delegated to me by the
Administrator, the FAA proposes to amend 14 CFR part 39 as follows:

PART 39--AIRWORTHINESS DIRECTIVES

1. The authority citation for part 39 continues to read as follows:

Authority: 49 U.S.C. 106(g), 40113, 44701.

Sec. 39.13 [Amended]

2. The FAA amends Sec. 39.13 by adding the following new airworthiness
directive: