Airworthiness Directive · Amendment 39-17156 · Air conditioning
Embraer S.A. Airplanes
This AD applies to Embraer S.A. Model ERJ 170-100 LR, -100 STD, -100 SE., and -100 SU airplanes; Model ERJ 170-200 LR, -200 SU, and -200 STD airplanes; Model ERJ 190-100 STD, -100 LR, -100 ECJ, and -100 IGW airplanes; and Model ERJ 190-200 STD, -200 LR, and -200 IGW airplanes; certificated in any category; all serial numbers.
We are superseding two existing airworthiness directives (AD) for all Embraer S.A. Model ERJ 170 and ERJ 190 airplanes. Those ADs currently require revising the airplane flight manual (AFM) to introduce limitations for the use of auxiliary power unit (APU) bleed and to prohibit dispatch with a failed air management system (AMS) controller card. This new AD requires replacing the AMS controller processor module with one containing new software, and a new AFM revision. This AD was prompted by reports of the possible loss of automatic activation of the engine inlet ice protection system. We are issuing this AD to prevent the possibility of a right-hand (RH) engine compressor stall after the APU becomes the active bleed source for the left side, which may result in an engine failure; and to prevent the intermittent communication failure between the AMS controller cards and both secondary power distribution assemblies (SPDAs), which could lead to the loss of automatic activation of the engine inlet ice protection system when flying in icing conditions, which could result in ice accretion in the engine inlet and subsequent dual engine failure.
You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done.
This paragraph restates the requirements of paragraph (g) of AD 2010-07-04, Amendment 39-16248 (75 FR 14333, March 25, 2010). For airplanes equipped with AMS controller cards having part number (P/N) 1001050-1-YYY or 1001050-2-YYY containing software version Black Label 08 or lower installed: Within 10 days after April 9, 2010 (the effective date of AD 2010-07-04), revise the Limitations section of the AFM to include the following statement. This may be done by inserting a copy of this AD in the AFM. Doing the actions required by paragraph (i) of this AD terminates the requirements of this paragraph.
Dispatch with the message `RECIRC SMK DET FAIL' displayed on the ground is prohibited unless troubleshooting action confirms the message has not been triggered due to a failure of an AMS controller card.
Note 1 to paragraph (g) of this AD: When a statement identical to that in paragraph (g) of this AD has been included in the general revisions of the AFM, the general revisions may be inserted into the AFM, and the copy of this AD may be removed from the AFM.
This paragraph restates the requirements of paragraph (g) of AD 2010-18-01, Amendment 39-16414 (75 FR 52238, August 25, 2010). For all airplanes: Within 14 days after September 9, 2010 (the effective date of AD 2010-18-01), revise the Limitations section of the applicable AFM to include the information in EMBRAER Operational Bulletin 170-001/09, Revision 1, dated February 10, 2010, as specified in the operational bulletin. This operational bulletin introduces limitations for the use of APU bleed. Doing the actions required by paragraph (i) of this AD terminates the requirements of this paragraph.
Note 2 to paragraph (h) of this AD: This may be done by inserting a copy of EMBRAER Operational Bulletin 170-001/09, Revision 1, dated February 10, 2010, into the AFM. When this operational bulletin has been included in general revisions of the AFM, the general revisions may be inserted in the AFM, provided the relevant information in the general revision is identical to that in the operational bulletin, and the operational bulletin can be removed.
Within 3,300 flight hours after the effective date of this AD: Replace existing Hamilton Sundstrand AMS controller processor modules (slots 18 and 25) P/N 1001050-1-YYY, 1001050-2-YYY, 1001050-3-YYY, or 1001050-4-YYY, with a new or serviceable AMS controller processor module containing software version Black Label—11, or later approved version of the software, in accordance with the Accomplishment Instructions of Embraer Service Bulletin 170-21-0049, dated November 29, 2010 (for Model ERJ 170 airplanes); Embraer Service Bulletin 190-21-0035, dated November 29, 2010 (for Model ERJ 190 airplanes); or Embraer Service Bulletin 190LIN-21-0016, dated February 23, 2011 (for Model ERJ 190-100 ECJ airplanes).
For the purposes of this AD, “later-approved version of the software,” is defined as software having design approval holder (DAH) design changes that have been approved after the publication of Embraer Service Bulletin 170-21-0049, dated November 29, 2010 (for Model ERJ 170 airplanes); Embraer Service Bulletin 190-21-0035, dated November 29, 2010 (for Model ERJ 190 airplanes); and Embraer Service Bulletin 190LIN-21-0016, dated February 23, 2011 (for Model ERJ 190-100 ECJ airplanes).
After doing the actions required by paragraph (i) of this AD, before further flight, revise the Limitations section of the applicable AFM by removing the limitation required by paragraph (g) of this AD and the revision required by paragraph (h) of this AD.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
