AD Amdt-39-10472
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | 747 and 767 | Airworthiness Directives; Boeing Model 747 and 767 Series Airplanes Equipped With General Electric (GE) CF6-80C2 Engines |
Unsafe Condition
Engine flameout due to the use of JP-4 or Jet B fuel during certification testing on an engine with dribble flow fuel nozzles (DFFN's) installed.
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Required Actions
Revise the FAA-approved Airplane Flight Manual (AFM) to prohibit the use of certain fuels; replace the existing placard on the door of the fueling control panel with a new placard; or replace all dribble flow fuel nozzles (DFFN's) with standard fuel nozzles, which eliminates the need for a placard and AFM revision.
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Compliance Time
Before further flight
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Affected Aircraft
Boeing Model 747 and 767 series airplanes equipped with General Electric (GE) CF6-80C2 engines, including additional airplanes added by this amendment.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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