75-21-02: Fuselage Frame
FAA order 75-21-02 is an airworthiness directive in force since October 16, 1975. The FAA's subject line: Fuselage Frame. It names Messerschmitt-Bolkow-Blohm BO 209: about 5 aircraft on the U.S. register today, though an order usually covers particular versions or serial numbers rather than every one. System: airframe structure.
What it applies to as the FAA lists it
- Kind of product
- Aircraft
- Makes
- DaimlerChrysler Aerospace AG
- Models
- BO-209-150 FF, BO-209-150 FV, BO-209-150 RV, BO-209-160 FV, BO-209-160 RV
- On this site
- Messerschmitt-Bolkow-Blohm BO 209 5 registered
Dates and paperwork
- In force since
- October 16, 1975
- Docket
- Unknown
- Status
- Current
- The FAA's document
- Read the order on the FAA's site
The order itself the regulatory text, as published
Show the full text (1,250 characters)
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.
Related safety bulletins advice on the same designs, not orders
2009-07-24CE-09-43 · Alternative Method of Compliance for AD 87-09-01
2003-03-14CE-03-31 ·
Source: FAA Dynamic Regulatory System, airworthiness directives. The FAA's document is the authority; the register counts are this site's, from the FAA register of October 5, 2026. Connections as data: /graph/directive/75-21-02.json · aircraft systems.