Airworthiness directives › 2020-02-10
AD 2020-02-10 Airworthiness Directives; De Havilland Aircraft of Canada Limited (Type Certificate Previously Held by Bombardier, Inc.) Airplanes
Models named: DHC-8-400, -401, -402. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to De Havilland Aircraft of Canada Limited (Type Certificate Previously Held by Bombardier, Inc.) Model DHC-8-400, -401, and -402 airplanes, certificated in any category, serial numbers 4001 and 4003 and subsequent.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
For purposes of this AD, an affected APD is manufactured by Kidde Aerospace and Defense (part of United Technologies Aerospace Systems (UTAS)) and has a part number and serial number identified in paragraphs (g)(1) through (10) of this AD. (1) Part number 10-1096 (all serial numbers). (2) Part number 10-1096-01 (all serial numbers). (3) Part number 10-1096-02 (serial numbers before AEM9907). (4) Part number 10-1097 (all serial numbers). (5) Part number 10-1097-01 (all serial numbers). (6) Part number 10-1097-02 (serial numbers before 17-0005). (7) Part number 10-1098 (all serial numbers). (8) Part number 10-1098-01 (serial numbers before 17-0110). (9) Part number 10-1099 (all serial numbers). (10) Part number 10-1099-01 (serial numbers before 17-0009).
Unsafe condition
This AD was prompted by a report of a quality escape in the manufacturing of advanced pneumatic detector (APD) switches, which consisted of the presence of contamination on the switch contact pin. The FAA is issuing this AD to address such contamination that could insulate the contact pin from the diaphragm and result in an undetected fire or late detection of a fire.
Affected ADs
None.
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The directive text above is reproduced from the Federal Register, a work of the United States government and in the public domain. The separation into applicability, compliance and required actions is TrackAD's.*1