AD 2011-07-07
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Fokker | Services B | Airworthiness Directives; Fokker Services B.V. Model F.28 Mark 1000, 2000, 3000, and 4000 Airplanes |
| aircraft | Aviat | Various | Airworthiness Directives; Fokker Services B.V. Model F.28 Mark 1000, 2000, 3000, and 4000 Airplanes |
Unsafe Condition
Under certain conditions, an ignition source may develop in the wing tank vapour space, due to insufficient clearance between the wiring along the Fuel Quantity Tank Units (FQTU's) and the local reinforcing structure around the upper skin cut-out. This condition, if not corrected, in combination with flammable fuel vapours, could result in a wing tank explosion and consequent loss of the aeroplane.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Perform a detailed inspection for minimum clearance of the gap between the FQTU wiring harness and the outer wing FQTU hole reinforcement structure, in accordance with Fokker Service Bulletin SBF28-57-097, Revision 1. If the minimum clearance is found to be insufficient, rework the surrounding structure to remove the possibility of an ignition source, also in accordance with the same service bulletin.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 84 months after the effective date of this AD, or at the next scheduled opening of the fuel tanks, whichever occurs first.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Fokker Services B.V. Model F.28 Mark 1000, 2000, 3000, and 4000 airplanes, certificated in any category, all serial numbers.
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
This site is not affiliated with or endorsed by the FAA. Always verify with official sources.