AD 87-14-08
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Viking Air Limited | DHC-7-1 | Airworthiness Directives; DEHAVILLAND Model DHC-7 Series Airplanes |
| aircraft | Viking Air Limited | DHC-7-100 | Airworthiness Directives; DEHAVILLAND Model DHC-7 Series Airplanes |
| aircraft | Viking Air Limited | DHC-7-101 | Airworthiness Directives; DEHAVILLAND Model DHC-7 Series Airplanes |
| aircraft | Viking Air Limited | DHC-7-102 | Airworthiness Directives; DEHAVILLAND Model DHC-7 Series Airplanes |
| aircraft | Viking Air Limited | DHC-7-103 | Airworthiness Directives; DEHAVILLAND Model DHC-7 Series Airplanes |
Unsafe Condition
Fuel fire in the wing landing light bay due to fuel leakage from the No. 4 flap track canoe footprint area, tank end ribs, and wing box outboard of the No. 1 and No. 4 wing fuel tanks.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Within 50 hours time-in-service after the effective date, inspect the No. 4 flap track canoe footprint area, tank end ribs, and wing box outboard of the fuel tanks per Service Bulletin 7-57-30. If fuel leakage is found, perform an internal inspection, repair, and pressure test of the fuel tank before further flight. Within 200 hours time-in-service, install Modification 7/2536 per the same service bulletin.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 50 hours time-in-service after the effective date of this AD and within 200 hours time-in-service after the effective date of this AD
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Viking Air Limited Model DHC-7-1, DHC-7-100, DHC-7-101, DHC-7-102, DHC-7-103 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 8, 2026
Rights: U.S. Government Public Domain
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