Airworthiness directives › 2014-26-09
AD 2014-26-09 Airworthiness Directives; Bombardier, Inc. Airplanes
Models named: BD-700-1A10. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
(1) This AD applies to Bombardier, Inc. Model BD-700-1A10 airplanes, certificated in any category, equipped with any electrical wiring heater current/brake temperature monitor unit (HBMU) installed in accordance with any FAA supplemental type certificate specified in table 1 and table 2 of paragraph 1.A., “Effectivity,” of Bombardier Service Bulletin 700-30-021, Revision 01, dated November 21, 2012. (2) For airplanes on which the applicable service request for product support action (SRPSA) specified in table 3 and table 4 of paragraph 1.A., “Effectivity,” of Bombardier Service Bulletin 700-30-021, Revision 01, dated November 21, 2012, has been incorporated, the requirements of this AD have been met.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
This paragraph restates the requirements of paragraph (g) of AD 2014-03-05, Amendment 39-17742 (79 FR 10331, February 25, 2014). For airplanes equipped with any electrical wiring HBMU installed in accordance with any FAA supplemental type certificate specified in table 1 of paragraph 1.A., “Effectivity,” of Bombardier Service Bulletin 700-30-021, Revision 01, dated November 21, 2012: Within 800 flight hours or 15 months after April 1, 2014 (the effective date of AD 2014-03-05), whichever occurs first, modify the air data probes and sensors, in accordance with the Accomplishment Instructions of Bombardier Service Bulletin 700-30-021, Revision 01, dated November 21, 2012.
Unsafe condition
This AD was prompted by a report that the manufacturer has determined that some completion centers used the heater current/brake temperature monitor unit (HBMU) logic circuit to control the line voltage of the drain mast heaters. We are issuing this AD to detect and correct an unannunciated failure of two pitot static probe heaters, which could affect controllability of the airplane in icing conditions.
Affected ADs
This AD replaces AD 2014-03-05, Amendment 39-17742 (79 FR 10331, February 25, 2014).
Read the original on the Federal Register →
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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