AD 2021-24-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Bell Helicopter Textron Canada Limited | 505 | Airworthiness Directives; Bell Textron Canada Limited (Type Certificate Previously Held by Bell Helicopter Textron Canada Limited) Helicopters |
| aircraft | Textron | Various | Airworthiness Directives; Bell Textron Canada Limited (Type Certificate Previously Held by Bell Helicopter Textron Canada Limited) Helicopters |
| aircraft | Bell | Various | Airworthiness Directives; Bell Textron Canada Limited (Type Certificate Previously Held by Bell Helicopter Textron Canada Limited) Helicopters |
Unsafe Condition
unsatisfactory flight performance of the engine above pressure altitude limitations for Jet B and JP-4 fuels, which could result in low fuel pressure, engine flame-out, or engine power interruption.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Within 30 calendar days after the effective date of this AD, revise the Limitations Section of the existing Rotorcraft Flight Manual (RFM) for your helicopter by replacing Figure 1-6. with Figure 1-6. Fuel Operating Envelope (Sheet 1 of 1) of Bell 505 Rotorcraft Flight Manual BHT-505-FM-1, Revision 3, dated July 25, 2018. Using a different document with information identical to that in Figure 1-6. Fuel Operating Envelope (Sheet 1 of 1) of BHT-505-FM-1 Revision 3 is acceptable for compliance with the requirements of this AD. The action required by this paragraph may be performed by the owner/operator (pilot) holding at least a private pilot certificate and must be entered into the aircraft records showing compliance with this AD in accordance with 14 CFR 43.9(a)(1) through (4) and 14 CFR 91.417(a)(2)(v).
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 30 calendar days after the effective date of this AD
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Affected Aircraft
Bell Helicopter Textron Canada Limited (type certificate previously held by Bell Helicopter Textron Canada Limited) Model 505 helicopters having serial number 65011 and subsequent, certificated in any category.
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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