Airworthiness Directive · Amendment 39-16700 · Fuel
Bombardier, Inc. Model DHC-8-400 Series Airplanes
This AD applies to Bombardier, Inc. Model DHC-8-400, -401, and -402 airplanes, certificated in any category; having 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 (P/N) 2960018-101.
We are adopting a new airworthiness directive (AD) for the products listed above. This AD results from mandatory continuing airworthiness information (MCAI) issued by an airworthiness authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as:
You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done.
Within 6,000 flight hours after the effective date of this AD, do a general visual inspection for red anodized threads of the outlet fitting of the MFCV having P/N 2960018-101 installed in the left and right wing fuel tanks, in accordance with the Accomplishment Instructions of Bombardier Service Bulletin 84-28-08, dated March 11, 2010. If the MFCV has a chemical film coating (gold color) outlet fitting, no further action is required by AD, except as required by paragraph (i) of this AD.
(h) If during the inspection required by paragraph (g) of this AD, a MFCV having a red anodized check valve outlet fitting is found: Before further flight, replace the MFCV with a MFCV that has a chemical film coating (gold color) check valve outlet fitting, in accordance with the Accomplishment Instructions of Bombardier Service Bulletin 84-28-08, dated March 11, 2010.
(i) As of the effective date of this AD, no person may install a replacement MFCV having P/N 2960018-101, with a red anodized check valve outlet fitting, on any airplane.
Note 1: This AD differs from the MCAI and/or service information as follows: No differences.
