# AD 83-10-04: Horizontal Stabilizer Attachment Fittings

- Type: Airworthiness directive
- Status: Current
- Products: Hamburger Flugzeugbau G.m.b.H. HFB 320 Hansa
- Effective: June 6, 1983
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Large airplane
- Amendment: 39-4653
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/9C1BE42B346FE2B1862569F100694A6F.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/83-10-04

## The airworthiness directive

83-10-04 MESSERSCHMITT-BOLKOW-BLOHM GMBH: Amendment 39-4653. Applies to HFB-320 airplanes serial numbers 1021-1023, 1026, 1027, 1030-1040, 1045, and 1049-1057. To prevent failure of the horizontal stabilizer attachment fittings accomplish the following, unless already accomplished:

1. Visually inspect the horizontal stabilizer attachment fittings and adjacent structure for corrosion and cracks in accordance with paragraph I of the "Accomplishment Instructions" of Messerschmitt-Bolkow-Blohm GMBH Service Bulletin 55-7 dated September 7, 1979, within 300 hours time in service or one year, whichever occurs first, for airplanes with a maximum of 1500 hours on the horizontal stabilizer on the effective date of this AD, and within 50 hours time in service or two months, whichever occurs first, for airplanes with more than 1500 hours on the horizontal stabilizer.

2. Rework the horizontal stabilizer in accordance with paragraph 7.1 or 7.2, as appropriate, of the service bulletin within the time intervals specified in the service bulletin.

3. Alternate means of compliance which provide an equivalent level of safety may be used when approved by the Manager, Seattle Aircraft Certification Office, FAA, Northwest Mountain Region.

4. Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate airplanes to a base for the accomplishment of inspections and/or modifications required by this AD.

This amendment becomes effective June 6, 1983.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS A14EU](https://openairdocs.org/tcds/A14EU) (historical): Hamburger Flugzeugbau G.m.b.H.; names 1 of 1 models: HFB 320 Hansa

## Registered aircraft it may apply to (OpenAirDocs)

No registered aircraft matched the models it names.

Its text cites no advisory circulars or STCs.

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