Aircraft
Certification Service Washington, DC U.S. Department of Transportation Federal Aviation Administration
AIR-21-04
February 11, 2021
This is information only. Recommendations
aren’t mandatory.
Introduction
This Special Airworthiness Information Bulletin is being issued to
advise you of an airworthiness concern on Embraer S.A. Model EMB-500
airplanes with marketing designations of Phenom 100E or Phenom 100EV or
that have incorporated a certain service bulletin (SB). Specifically,
this SAIB informs the public of hydraulic powerpack failures and the
effects these failures have on the airplane.
At this time, the airworthiness concern is not considered an unsafe
condition that would warrant airworthiness directive (AD) action under
Title 14 of the Code of Federal Regulations (14 CFR) part 39.
Background
The FAA received reports of failures of hydraulic powerpacks on certain
Embraer S.A. Model EMB-500 airplanes. In some cases, this failure
included an in-flight loss of hydraulic pressure resulting in an
emergency gear extension and reports of limited braking. In accordance
with the bilateral treaty between the United States and Brazil, the FAA
reported this information to the Brazilian Agencia Nacional De Aviacao
Civil (ANAC), the certificating authority for this airplane, as well as
Embraer S.A., the type certificate holder. These reports are on Model
EMB-500 airplanes with marketing designations of Phenom 100E or Phenom
100EV or that have incorporated Embraer S.A. SB No. 500-00-0009. This
service bulletin installs the spoiler and speed brake function and a
new hydraulic system.
Phenom 100E airplanes are equipped with PW617F-E engines, a G1000
avionics system, and spoiler panels; and Phenom 100EV airplanes are
equipped with PW617F1-E engines, a G3000 avionics system, and spoiler
panels.
In response, ANAC issued Special Airworthiness Bulletin No. 2021-01R01
that describes the EMB-500 hydraulic powerpack system and the safety
implications of powerpack failures. ANAC concludes that the safety
objectives of the airplane for all critical failures are still
maintained despite the identified powerpack failures. However, in
consideration of the undesirable effects of these recurrent failures on
the availability of other airplane systems and possible exposure to
failure combinations, ANAC recommends the incorporation of Embraer SB
No. SB500-29-0007. This SB addresses the pressure drop in the
integrated hydraulic pump suction port by replacing certain tubes and
hoses, and by reworking the suction line support. ANAC confirms that
this SB is part of a set of changes being introduced by Embraer that
are intended to improve the reliability of the hydraulic powerpack.
In addition, the FAA notes that Embraer recently released Embraer SL
No. 500-29-0006 that addresses the lubrication of the hydraulic
reservoir when the airplane has been parked for 3 days or more. Embraer
recommends this ground lubrication procedure as a good practice to
increase the hydraulic system reliability.
Recommendations
Based on a further review of the ANAC safety assessment and referenced documentation, the FAA recommends the following:
Review the information
contained in ANAC Special Airworthiness Bulletin No. 2021-01R01 dated
February 1, 2021, or later ANAC-approved revision.
As applicable, incorporate
the modifications contained in Embraer S.A. SB No. SB500-29-0007
“Hydraulic Power – Hydraulic System Suction Line Replacement”, Original
Revision, dated December 17, 2020, or later ANAC-approved revision.
As applicable, incorporate
the procedures contained in Embraer S.A. SL No. 500-29-0006 “Hydraulic
Reservoir Lubrication After Long Resting Time”, Original Revision,
dated October 7, 2020, or later ANAC-approved revision.
For Further Information Contact
Jim Rutherford, Aviation Safety Engineer, 901 Locust, Room 301 , Kansas
City, MO 64106, United States; phone: (816) 329-4165; fax: (816)
329-4090; e-mail: jim.rutherford@faa.gov.
For Related Service Information Contact
Embraer S.A. Phenom Maintenance Support, Avenida Brigadeiro Faria Lima,
2170, P.O. Box 36/2, São José dos Campos, 12227-901,
Brazil; phone: +55 12 3927 1000; email:
phenom.reliability@embraer.com.br; website:
https://www.embraer.com.br/en-US/Pages/home.aspx.
The ANAC Special Airworthiness Bulletin No. 2021-01R01 may be obtained
from the ANAC website at
https://www.gov.br/anac/pt-br/assuntos/regulados/aeronaves/boletins-especiais-deaeronavegabilidade