AD 90-12-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Embraer S.A. | EMB-110P1 | Airworthiness Directives; EMBRAER Models EMB-110P1 and EMB-110P2 Airplanes |
| aircraft | Embraer S.A. | EMB-110P2 | Airworthiness Directives; EMBRAER Models EMB-110P1 and EMB-110P2 Airplanes |
Unsafe Condition
Failure of the inboard elevator mass balance arms and possible extreme vibration or flutter, resulting in possible loss of the airplane.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Within 10 hours time-in-service after the effective date, dye-penetrant inspect specified areas of the elevator balance weight arms and visually inspect remaining areas with a 10x glass. If cracks are found, replace with modified parts or original arms shown crack-free. If no cracks, reinspect every 25 hours TIS until modified arms are installed. Alternatively, replace both arms with modified parts within 1000 hours TIS if not done under paragraph (a).
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Compliance Time
Within the next 10 hours time-in-service (TIS) after the effective date of this AD, unless already accomplished. For alternative compliance under paragraph (b), within the next 1000 hours TIS after the effective date.
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Affected Aircraft
Embraer S.A. Models EMB-110P1 and EMB-110P2 (all serial numbers) equipped with 10 degree dihedral stabilizer as original equipment or via modification per EMBRAER Service Bulletin 110-55-022.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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