AD 61-04-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Air Trading Corporation | Army B-34 | LOCKHEED Models PV-1 and B-34 Aircraft |
| aircraft | Air Trading Corporation | Navy PV-1 | LOCKHEED Models PV-1 and B-34 Aircraft |
Unsafe Condition
Failure of the main landing gear drag strut attach plates (P/N 112900 or P/N 12665) can cause main landing gear collapse.
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Required Actions
Inspect the main landing gear drag strut attach plates for cracks and looseness using dye penetrant or FAA-approved equivalent. Inspections must occur within the next 25 landings and every 50 landings thereafter (option 1) or remove plates for X-ray/dye penetrant inspection within next 25 landings and every 150 landings thereafter (option 2). Replace plates/bolts with cracks, elongated bolt holes, or deformation before next flight. Discontinue inspections after installing Howard Aero P/N 5-302006 plates with specified bolts.
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Compliance Time
Within the next 25 landings and every 50 landings thereafter (option 1) or within the next 25 landings and every 150 landings thereafter (option 2)
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Affected Aircraft
Lockheed Models PV-1 and B-34 aircraft with main landing gear drag strut attach plates P/N 112900 or P/N 12665
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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