AD 83-10-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Hamburger Flugzeugbau G.m.b.H. | HFB 320 Hansa | Airworthiness Directives; MESSERSCHMITT-BOLKOW-BLOHM GMBH Model HFB-320 Airplanes |
Unsafe Condition
Failure of the horizontal stabilizer attachment fittings due to corrosion and cracks in the fittings and adjacent structure.
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Required Actions
Visually inspect the horizontal stabilizer attachment fittings and adjacent structure for corrosion and cracks in accordance with Service Bulletin 55-7. Rework the horizontal stabilizer as specified in the service bulletin within the required intervals. Use alternate means of compliance if approved by the FAA.
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Compliance Time
Within 300 hours time in service or one year, whichever occurs first, for airplanes with ≤1500 hours on the horizontal stabilizer; within 50 hours time in service or two months, whichever occurs first, for airplanes with >1500 hours.
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Affected Aircraft
MESSERSCHMITT-BOLKOW-BLOHM GMBH Model HFB-320 airplanes with serial numbers 1021-1023, 1026, 1027, 1030-1040, 1045, and 1049-1057.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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