# AD 75-21-02: Fuselage Frame

- Type: Airworthiness directive
- Status: Current
- Products: DaimlerChrysler Aerospace BO-209-150 FF, BO-209-150 FV, BO-209-150 RV, BO-209-160 FV and BO-209-160 RV
- Effective: October 16, 1975
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Small airplane
- Amendment: 39-2380
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/A2109731C16D93F386256A3A006DA237.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/75-21-02

## The airworthiness directive

75-21-02 MESSERSCHMITT-BOLKOW-BLOHM: Amendment 39-2380. Applies to Models BO-209 airplanes, S/N's 101 thru 201, and 301, certificated in all categories.

Compliance is required as indicated.

To prevent possible failure of the fuselage carry-through member of the wing, accomplish the following:

  (a) Within the next 10 hours' time in service after the effective date of this AD, unless already accomplished, visually inspect the rear side of the beam web of fuselage frame No. 2 for cracks, in accordance with paragraph C.1. of Messerschmitt-Bolkow-Blohm (MBB) Service Bulletin No. 209-20-1 7/74 dated 7/74, or an FAA-approved equivalent.

  (b) If the inspection required by paragraph (a) of this AD reveals cracks, before further flight, repair and reinforce fuselage frame No. 2 in accordance with MBB Instruction No. MBB 209-1/74, undated, or an FAA-approved equivalent.

  (c) If the inspection required by paragraph (a) of this AD reveals no cracks, within the next 50 hours' time in service after the effective date of this AD, unless already accomplished, reinforce fuselage frame No. 2 in accordance with MBB Instruction No. MBB 209-1/74, undated, or an FAA-approved equivalent.

This amendment becomes effective October 16, 1975.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS A27EU](https://openairdocs.org/tcds/A27EU): Airbus Defence and Space GmbH; names 5 of 5 models: BO-209-150 RV, BO-209-160 FV, BO-209-150 FV, BO-209-150 FF, BO-209-160 RV

## 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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