AD 2020-12-15
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Bombardier | Various | Airworthiness Directives; Bombardier, Inc., Airplanes |
Unsafe Condition
incorrect installation of the safety valves and over-torqued trunnion nuts, which could cause damage to the safety valve flange and could result in pressure leakage or cabin depressurization at altitude.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
a measurement of the trunnion nut torque of the V-band clamp, an inspection of the safety valve and airplane bulkhead flange area for any cracking and deformations, and corrective actions, if necessary, including replacement of the safety valve and repair of cracks on the airplane bulkhead flange.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
before August 31, 2020
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Affected Aircraft
Bombardier, Inc., Model BD-700-1A10 and BD-700-1A11 airplanes.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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