AD 2011-21-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Fokker | Services B | Airworthiness Directives; Fokker Services B.V. Model F.27 Mark 050, 200, 300, 400, 500, 600, and 700 Airplanes; and Model F.28 Airplanes |
| aircraft | Aviat | Various | Airworthiness Directives; Fokker Services B.V. Model F.27 Mark 050, 200, 300, 400, 500, 600, and 700 Airplanes; and Model F.28 Airplanes |
Unsafe Condition
A short circuit can develop in the fuel pilot valve solenoid or in the wiring to the solenoid, which may result in an ignition source in the wing tank vapor space, potentially leading to a wing fuel tank explosion and consequent loss of the airplane.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Re-work the wiring and install fuses packed in jiffy junctions (crimped wire in-line junction device) in the wiring to the fuel pilot valve solenoid. Revise the maintenance program to include a new Critical Design Configuration Control Limitation (CDCCL).
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 24 months after the effective date of this AD.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Fokker Services B.V. Model F.27 Mark 050, 200, 300, 400, 500, 600, and 700 airplanes; and Model F.28 Mark 0070, 0100, 1000, 2000, 3000, and 4000 airplanes; all serial numbers.
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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