AD 2017-22-13
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Rolls-Royce | plc | Airworthiness Directives; Rolls-Royce plc Turbofan Engines |
Unsafe Condition
Cracks found in the transition duct area of the drains mast, which is part of the firewall in Zone 1, could lead to a breach of the firewall and an uncontrolled fire, potentially resulting in reduced control of the aircraft.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the drains mast for cracks. Replace the drains mast if cracks are found.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Before further flight
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Rolls-Royce plc RB211-Trent 970-84 and RB211-Trent 972-84 turbofan engines with drains mast, part number (P/N) KH31996, installed.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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