# AD 68-06-03: Flap Center Hinge Bolt

- Type: Airworthiness directive
- Status: Current
- Products: Textron DH.125 Series 1A, DH.125 Series 1A-522 and DH.125 Series 3A
- Effective: April 20, 1968
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Large airplane
- Amendment: 39-566
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FB2AC35F023D1BF6862569A400539205.0001
- DRS record last changed: January 21, 2026
- Page: https://openairdocs.org/ad/68-06-03

## The airworthiness directive

68-06-03 HAWKER SIDDELEY: Amdt. 39-566. Applies to Model DH. 125 airplanes, Series 1A, 1A/522 and 3A.

Compliance required as indicated.

To prevent a fully asymmetric flap condition in the lift dump position, within the next 150 hours' time in service after the effective date of this AD, replace the flap center hinge bolt, P/Ns 25CF71, 25CF1837, 25CF2387 and 25CF2357, with a self-retaining bolt, P/N 3110-7681, in accordance with Hawker Siddeley Service Bulletin 27-49-(1894) Revision 2, dated November 27, 1967, or later ARB-approved revision or an equivalent approved by the Chief, Aircraft Certification Staff, FAA, Europe, Africa and Middle East Region.

This amendment becomes effective April 20, 1968.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS A3EU](https://openairdocs.org/tcds/A3EU): Textron Aviation Inc.; names 3 of 50 models: DH.125 Series 1A, DH.125 Series 1A-522, DH.125 Series 3A

## 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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