(a) EFFECTIVE DATE

    This AD is effective September 29, 2015.

(b) AFFECTED ADS

    None.

(c) APPLICABILITY

    This AD applies to the Cessna Aircraft Company airplanes, certificated
    in any category, identified  in table 1 to  paragraph (c) of this  AD,
    that have  an air  conditioning (A/C)  system installed  via a  Cessna
    Aircraft Company  supplemental  type certificate  (STC) identified  in
    paragraph (c)(1), (c)(2), (c)(3), or (c)(4) of this AD.

(1) SA3849SW (http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgstc.nsf
    /0/029C5719AD18E79C86257C1A0069742C?OpenDocument&Highlight=sa3849sw).

(2) SA7580SW (http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgstc.nsf
    /0/7C9B0FB7D5923D4986257C1A0069E2C0?OpenDocument&Highlight=sa7580sw).

(3) SA7753SW (http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgstc.nsf
    /0/A78233CBB3314BAF86257C1A0069D128?OpenDocument&Highlight=sa7753sw).

(4) SA8918SW (http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgstc.nsf
    /0/5FAD7ABA3EAA464C86257C1A0069F239?OpenDocument&Highlight=sa8918sw).

      TABLE 1 TO PARAGRAPH (C) OF THIS AD – AFFECTED AIRPLANE MODELS AND  
                                            SERIAL NUMBERS (S/NS)         
    ______________________________________________________________________
    CESSNA AIRCRAFT COMPANY
    AIRPLANE MODELS                     S/NS
    ______________________________________________________________________
    Model 500 and 501 airplanes         0001 through 0689 inclusive

    Model 550 and 551 airplanes         0002 through 0733 inclusive, and
                                        0801 through 1136 inclusive

    Model S550 airplanes                0001 through 0160 inclusive

    Model 560 airplanes                 0001 through 0707 inclusive, and
                                        0751 through 0815 inclusive

    Model 650 airplanes                 0200 through 0241 inclusive, and
                                        7001 through 7119 inclusive
    ______________________________________________________________________

(d) SUBJECT

    Air Transport Association (ATA) of America Code 21, Air Conditioning.

(e) UNSAFE CONDITION

    This AD was prompted by reports  of smoke and/or fire in the  tailcone
    caused by sparking  due to excessive  wear of the  brushes in the  A/C
    motor. We are issuing this AD to prevent the brushes in the A/C  motor
    from wearing down beyond their limits, which could result in the rivet
    in the brush contacting the commutator, causing sparks and  consequent
    fire  and/or  smoke  in  the  tailcone  with  no  means  to  detect or
    extinguish the fire and/or smoke.

(f) COMPLIANCE

    Comply with this AD within the compliance times specified,  unless al-
    ready done.

(g) INSPECTION FOR PART NUMBER (P/N)

    Within 30 days or 10 flight hours after the effective date of this AD,
    whichever occurs first: Inspect the A/C compressor motor to  determine
    whether P/N FWA1134104-1 or P/N FWA1134104-5 is installed. A review of
    airplane maintenance records is acceptable in lieu of this  inspection
    if the  part number  of the  A/C compressor  motor can be conclusively
    determined from that review.

(h) INSPECTION OF COMPRESSOR HOUR METER AND MAINTENANCE RECORDS

    If, during the  inspection required by  paragraph (g) of  this AD, any
    A/C compressor motor  having P/N FWA1134104-1  or P/N FWA1134104-5  is
    found: Within 30 days or 10  flight hours after the effective date  of
    this AD, whichever occurs first, determine the hour reading on the A/C
    compressor hour meter as specified in paragraphs (h)(1) and (h)(2)  of
    this AD.

(1) Inspect  the  number  of  hours accumulated on the A/C compressor hour
    meter.

(2) Check  the  airplane  logbook  for  any  entry  for  replacing the A/C
    compressor  motor  brushes  with new  brushes,  or  for replacing  the
    compressor motor or compressor condenser module assembly (pallet) with
    a motor or assembly that has new brushes.

(i) If the logbook contains an entry for replacement of parts as specified
    in  paragraph  (h)(2)  of  this  AD,  determine  the  number  of hours
    accumulated  on  the A/C  compressor  motor brushes  by  comparing the
    number of hours on the compressor motor since replacement and use this
    number in lieu  of the number  determined in paragraph  (h)(1) of this
    AD.

(ii) If, through the logbook check, a determination cannot be made regard-
     ing  the number  of hours  accumulated  on  the A/C  compressor motor
     brushes, as specified in paragraph (h)(2) of this AD, use the  number
     of hours accumulated on the  A/C compressor hour meter determined  in
     paragraph (h)(1)  of this  AD, or  presume the  brushes have over 500
     hours time-in-service.

(i) REPLACEMENT

    Using the hour reading on the A/C compressor hour meter determined  in
    paragraph (h)  of this  AD, replace  the A/C  compressor motor brushes
    with new  brushes at  the later  of the  times specified in paragraphs
    (i)(1) and (i)(2)  of this AD.  Thereafter, repeat the  replacement of
    the A/C compressor motor brushes at intervals not to exceed 500  hours
    time-in-service on  the A/C  compressor motor.  Do the  replacement in
    accordance  with  the  applicable  Cessna  maintenance  manual subject
    specified in paragraphs (j)(1) through (j)(6) of this AD.

(1) Before the  accumulation of 500 total hours time-in-service on the A/C
    compressor motor.

(2) Before further flight after doing the inspection required in paragraph
    (h) of this AD.

(j) MAINTENANCE MANUAL INFORMATION FOR REPLACEMENT

    Use  the  instructions  in the  applicable  Cessna  maintenance manual
    subject specified in paragraphs (j)(1) through (j)(6) of this AD to do
    the replacement required by paragraph (i) of this AD.

(1) Subject 4-11-00,  Replacement Time Limits, of Chapter 4, Airworthiness
    Limitations, Revision 6, dated June 23, 2014, of the Cessna Model 500/
    501 Maintenance Manual.

(2) Subject 4-11-00, Replacement Time Limits, of Chapter 4,  Airworthiness
    Limitations, Revision 10 dated June 23, 2014, of the Cessna Model 550/
    551 Maintenance Manual.

(3) Subject 4-11-00, Replacement Time Limits, of Chapter 4,  Airworthiness
    Limitations, Revision 12, dated June 23, 2014, of the Cessna Model 550
    Bravo Maintenance Manual.

(4) Subject 4-11-00, Replacement Time Limits, of Chapter 4,  Airworthiness
    Limitations, Revision 9, dated June 23, 2014, of the Cessna Model S550
    Maintenance Manual.

(5) Subject 4-11-00, Replacement Time Limits, of Chapter 4,  Airworthiness
    Limitations, Revision 22, dated June 23, 2014, of the Cessna Model 560
    Maintenance Manual.

(6) Subject 4-11-00, Replacement Time Limits, of Chapter 4,  Airworthiness
    Limitations, Revision 32, dated June 23, 2014, of the Cessna Model 650
    Maintenance Manual.

(k) DEACTIVATION OF THE A/C SYSTEM

    In lieu of replacing the  A/C compressor motor brushes as  required by
    this AD, deactivate the A/C system as specified in paragraph (k)(1) or
    (k)(2) of this AD, as applicable.

(1) For all airplanes except Model 650 airplanes: Pull the vapor cycle A/C
    circuit breaker labeled "AIR COND,"  do the actions specified in para-
    graphs (k)(1)(i) and (k)(1)(ii) of this AD, and document  deactivation
    of the system  in the airplane logbook,  referring to  this AD as  the
    reason for deactivation.

(i) Fabricate  a  placard  that states: "A/C DISABLED" with 1/8-inch black
    lettering on a white background.

(ii) Install the placard on the  airplane instrument panel within 6 inches
     of the A/C selection switch.

(2) For  Model 650  airplanes:  Pull  the  vapor cycle A/C circuit breaker
    labeled  "FWD  EVAP  FAN,"  do  the  actions  specified  in paragraphs
    (k)(1)(i) and (k)(1)(ii) of this AD, and document deactivation of  the
    system in the airplane logbook, referring to this AD as the reason for
    deactivation.

Note 1 to paragraph (k) of  this AD: While the A/C system  is deactivated,
it is recommended  that airplane operators  remain aware of  the operating
temperature  limitations  specified  in  the  applicable  airplane  flight
manual.

(l) REACTIVATION OF THE A/C SYSTEM

    If the  A/C system  is deactivated,  as specified  in paragraph (k) of
    this  AD,  prior to  the  A/C system  being  reactivated: Perform  the
    inspection  specified  in  paragraph  (h)  of  this  AD,  and  do  the
    replacements  specified in  paragraph (i)  of this  AD,  at  the times
    specified  in paragraph  (i) of  this AD.  Return  the  A/C system  to
    service by doing the actions  specified in paragraph (l)(1) or  (l)(2)
    of this AD, as applicable.

(1) For all airplanes except Model 650 airplanes:  Push in the vapor cycle
    A/C circuit breaker labeled "AIR COND," remove the placard by the  A/C
    selection switch that states "A/C DISABLED," and document reactivation
    of the system in the airplane logbook.

(2) For  Model 650 airplanes:  Push in the vapor cycle A/C circuit breaker
    labeled "FWD EVAP FAN," remove the placard by the A/C selection switch
    that states "A/C DISABLED," and document reactivation of the system in
    the airplane logbook.

(m) PARTS RETURN AND REPORTING REQUIREMENTS

    For the  first two  A/C compressor  motor brush  replacement cycles on
    each airplane, send  the removed brushes  to Cessna Aircraft  Company,
    Cessna Service Parts and Programs, 7121 Southwest Boulevard,  Wichita,
    KS  67215.  Provide  the  brushes  and  the  information  specified in
    paragraphs (m)(1) through (m)(6) of  this AD within 30 days  after the
    replacement if the replacement was done on or after the effective date
    of this AD, or within 30 days  after the effective date of this AD  if
    the replacement was done before the effective date of this AD.

(1) The model and serial number of the airplane.

(2) The part number of the motor.

(3) The part number of the brushes, if known.

(4) The elapsed time, in motor hours,  since the last brush/motor replace-
    ment, if known.

(5) If motor hours are unknown,  report  the elapsed airplane flight hours
    since the last brush/motor replacement,  and indicate that motor hours
    are unknown.

(6) The number of motor hours currently displayed on the pallet hour meter
    if installed.

(n) PARTS INSTALLATION LIMITATION

    As of  the effective  date of  this AD,  no person  may install an A/C
    compressor motor having P/N  FWA1134104-1 or P/N FWA1134104-5,  unless
    the inspection specified  in paragraph (h)  of this AD  is done before
    installation, and the replacements specified in paragraph (i) of  this
    AD are  subsequently done  in accordance  with the  applicable service
    information identified in paragraphs (j)(1) through (j)(6) of this  AD
    at the times specified in paragraph (i) of this AD.

(o) SPECIAL FLIGHT PERMIT LIMITATION

    Special  flight  permits may  be  issued in  accordance  with sections
    21.197 and 21.199 of the  Federal Aviation Regulations (14 CFR  21.197
    and 21.199) with the following limitation: Operation of the A/C system
    is prohibited. (p) Paperwork Reduction Act Burden Statement A  federal
    agency may not  conduct or sponsor,  and a person  is not required  to
    respond to, nor shall a person be subject to a penalty for failure  to
    comply with a collection of information subject to the requirements of
    the  Paperwork  Reduction  Act unless  that collection  of information
    displays a current  valid OMB Control  Number. The OMB  Control Number
    for this  information collection  is 2120-0056.  Public reporting  for
    this  collection of  information is  estimated to  be approximately  5
    minutes per response, including  the time for reviewing  instructions,
    completing and reviewing the collection of information. All  responses
    to this collection of  information are mandatory. Comments  concerning
    the accuracy of  this burden and  suggestions for reducing  the burden
    should  be  directed  to  the  FAA  at:  800  Independence  Ave.   SW,
    Washington, DC 20591, Attn: Information Collection Clearance  Officer,
    AES-200.

(q) ALTERNATIVE METHODS OF COMPLIANCE (AMOCS)

(1) The Manager, Wichita Aircraft Certification Office (ACO), 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 ACO, send  it to the attention  of the
    person identified in paragraph (r) of this AD.

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

(r) RELATED INFORMATION

    For more information about this AD contact Craig Henrichsen, Aerospace
    Engineer,  Electrical  Systems  and  Avionics Branch,  ACE-119W,  FAA,
    Wichita  ACO,  1801 Airport Road,  Room  100,  Mid-Continent  Airport,
    Wichita, KS 67209;  phone:  316-946-4110;  fax:  316-946-4107;  email:
    Craig.Henrichsen@faa.gov.

(s) MATERIAL INCORPORATED BY REFERENCE

(1) The  Director  of  the  Federal Register approved the incorporation by
    reference (IBR)  of  the  service information listed in this paragraph
    under 5 U.S.C. 552(a) and 1 CFR part 51.

(2) You must use  this service information as applicable to do the actions
    required by this AD, unless the AD specifies otherwise.

(i) Subject 4-11-00, Replacement Time Limits, of Chapter 4,  Airworthiness
    Limitations, Revision 6, dated June 23, 2014, of the Cessna Model 500/
    501 Maintenance Manual.

(ii) Subject 4-11-00, Replacement Time Limits, of Chapter 4, Airworthiness
    Limitations, Revision 10 dated June 23, 2014, of the Cessna Model 550/
    551 Maintenance Manual.

(iii) Subject 4-11-00, Replacement Time Limits of Chapter 4, Airworthiness
      Limitations, Revision 12,  dated June 23, 2014,  of the Cessna Model
      550 Bravo Maintenance Manual.

(iv) Subject 4-11-00, Replacement Time Limits, of Chapter 4, Airworthiness
     Limitations, Revision 9 dated June 23, 2014, of the Cessna Model S550
     Maintenance Manual.

(v) Subject 4-11-00, Replacement Time Limits, of Chapter 4,  Airworthiness
    Limitations, Revision 22, dated June 23, 2014, of the Cessna Model 560
    Maintenance Manual.

(vi) Subject 4-11-00, Replacement Time Limits, of Chapter 4, Airworthiness
     Limitations, Revision 32 dated June 23, 2014, of the Cessna Model 650
     Maintenance Manual.

(3) For service information identified in this AD, contact Cessna Aircraft
    Co., P.O. Box 7706, Wichita, KS 67277;  phone: 316-517-6215; fax: 316-
    517-5802; email citationpubs@cessna.textron.com; Internet https://www.
    cessnasupport.com/newlogin.html.

(4) You  may  view  this  service information at FAA,  Transport  Airplane
    Directorate, 1601 Lind Avenue SW., Renton, WA.  For information on the
    availability of this material at the FAA, call 425-227-1221.

(5) You  may  view  this  service  information  that  is  incorporated  by
    reference at the  National Archives and Records Administration (NARA).
    For  information  on  the  availability of this material at NARA, call
    202-741-6030,  or go to: http://www.archives.gov/federal-register/cfr/
    ibr-locations.html.

Issued in Renton, Washington, on August 10, 2015. Michael Kaszycki, Acting
Manager, Transport Airplane Directorate, Aircraft Certification Service.

FOR FURTHER INFORMATION CONTACT:  Craig  Henrichsen,  Aerospace  Engineer,
Electrical Systems and Avionics Branch,  ACE-119W,  FAA,  Wichita Aircraft
Certification Office (ACO),  1801 Airport Road,  Room  100,  Mid-Continent
Airport, Wichita, KS 67209; phone: 316-946-4110; fax: 316-946-4107; email:
Craig.Henrichsen@faa.gov.