Airworthiness Directives (ADs)
CAA-2010-07-012
The aircraft owner or operator shall comply with Airworthiness Directives issued by the CAA or the aeronautics authority of the State of Design (SoD) of the aviation products, appliances and parts, and take all necessary actions thereto.
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Issue Date
- 2010/07/14
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Applicability
- This Airworthiness Directive is applicable to Embraer model ERJ 190-100 STD, ERJ 190-100 LR, ERJ 190-100 IGW, ERJ 190-100 ECJ, ERJ 190-100 SR, ERJ 190-200 STD, ERJ 190-200 LR and ERJ 190-200 IGW airplanes, all serial numbers.
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Model Number
- Embraer model ERJ 190-100 STD, ERJ 190-100 LR, ERJ 190-100 IGW, ERJ 190-100 ECJ, ERJ 190-100 SR, ERJ 190-200 STD, ERJ 190-200 LR and ERJ 190-200 IGW airplanes, all serial numbers.
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CAA AD Number
- CAA-2010-07-012
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Aeronautics Authority of Original AD
- ANAC
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Original AD Number
- 2010-07-03(BRAZIL)
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Effective Date
- 2010/07/31
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Subject
- It has been found the possibility of right hand (RH) engine compressor stall after the Auxiliary Power Unit (APU) becomes the active bleed source for the left side. The most critical condition identified is:
- Both engines close to idle (e.g.: descent phase); and
- APU running; and
- APU bleed button pushed in.
In this condition, if the left hand (LH) engine fails, the APU bleed valve and the crossbleed valve may be both in the open position for a few seconds, what may lead to a backpressure in RH engine depending on APU bleed pressure. Such backpressure may cause an RH engine compressor stall,
culminating in a dual engine failure.
Since this condition affects flight safety, a corrective action is required. Thus, sufficient reason exists to request compliance with this AD.
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Reference Publications (Revision/ATA/SB)
- EMBRAER Operational Bulletin (OB) 170-001/09 Revision 01.
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Remarks
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