AD 65-22-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Mooney Aviation Company Inc | M20 | Airworthiness Directives; Mooney Model M20 and M20A Airplanes |
| aircraft | Mooney Aviation Company Inc | M20A | Airworthiness Directives; Mooney Model M20 and M20A Airplanes |
Unsafe Condition
Cracking in the tubular steel tail truss that supports the empennage on airplanes with wood wings and wood empennage.
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Required Actions
Inspect visually for cracks in all welded joints and adjacent structures of tail truss P/N 4009 using at least a 10-power glass or FAA-approved equivalent. Repair cracks in U-fitting P/N 4010 at the lower forward end of the truss before further flight per Mooney Service Letter No. 20-68 or equivalent. For cracks within 0.50 inch of existing weld beads (except U-fitting), repair with flame annealing in an FAA-approved manner. For cracks 0.50 inch or more from existing weld beads (except U-fitting), replace the tail truss with an unused part of the same P/N or repair via FAA-approved method or Mooney Designated Engineering Representative.
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Compliance Time
Within the next 25 hours' time in service after September 16, 1965, unless already accomplished within the last 75 hours' time in service, and thereafter at intervals not to exceed 100 hours' time in service from the last inspection until tail truss P/N 4009 is replaced with P/N 48007 per Mooney Service Bulletin No. 20-138 or later FAA-approved revision.
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Affected Aircraft
Mooney Model M20 and M20A airplanes with wood wings and wood empennage.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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