Airworthiness Directive · Amendment 39-22061 · Landing gear
De Havilland Aircraft of Canada Limited (Type Certificate Previously Held by Bombardier, Inc.) Airplanes
Superseded. A later AD replaced this one: AD 2024-12-05. Comply with the one in force.
This AD applies to De Havilland Aircraft of Canada Limited (type certificate previously held by Bombardier, Inc.) Model DHC-8-401 and -402 airplanes, certificated in any category, serial numbers 4001 and 4003 and subsequent.
The FAA is adopting a new airworthiness directive (AD) for certain De Havilland Aircraft of Canada Limited (type certificate previously held by Bombardier, Inc.) Model DHC-8-401 and -402 airplanes. This AD was prompted by reports of a certain bolt at the pivot pin link being found missing or having stress corrosion cracking. This AD requires a modification to the nose landing gear (NLG) shock strut assembly. The FAA is issuing this AD to address the unsafe condition on these products.
For any airplane having an NLG shock strut assembly, part number (P/N) 47100-XX (where XX represents any number), that has special bolt P/N 47205-1 or 47205-3: Within 1,600 flight cycles or 9 months after the effective date of this AD, whichever occurs first, modify the NLG shock strut assembly, in accordance with paragraph 3.B., “Procedure,” of the Accomplishment Instructions of De Havilland Aircraft of Canada Limited Service Bulletin 84-32-161, Revision B, dated March 31, 2021, including UTC Aerospace Systems Service Bulletin 47100-32-145, Revision 3, dated March 26, 2021.
Note 1 to paragraph (g): After installing pivot pin retention bolt part number NAS6204-14D, AD 2021-25-12, Amendment 39-21856 (86 FR 72174, December 21, 2021) applies to pivot pin retention bolt part number NAS6204-14D.
