AD 2011-11-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Bombardier | Various | Airworthiness Directives; Bombardier, Inc. Model DHC-8-400 Series Airplanes |
| aircraft | Aviat | Various | Airworthiness Directives; Bombardier, Inc. Model DHC-8-400 Series Airplanes |
Unsafe Condition
Some motive flow check valves (MFCV) were manufactured with an outlet fitting containing red anodized threads, which do not provide adequate electrical bonding between the valve and the adjacent fitting. In the absence of proper electrical bonding, the aeroplane fuel tank could be exposed to ignition sources in the case of a lightning strike.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Within 6,000 flight hours after the effective date, perform a general visual inspection for red anodized threads of the outlet fitting of the MFCV having part number 2960018-101 installed in the left and right wing fuel tanks. If a MFCV with red anodized threads is found, replace it with a MFCV that has a chemical film coating (gold color) outlet fitting before further flight.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 6,000 flight hours after the effective date
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Bombardier, Inc. Model DHC-8-400, -401, and -402 airplanes, serial numbers 4001 through 4190 inclusive, 4199 through 4201 inclusive, and 4203 through 4216 inclusive, equipped with a motive flow check valve (MFCV) having part number 2960018-101.
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.