# AD 69-23-05: Lower Engine Mount Bolts

- Type: Airworthiness directive
- Status: Current
- Products: DaimlerChrysler Aerospace Bolkow Jr.
- Effective: December 11, 1969
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Small airplane
- Amendment: 39-873
- Registered aircraft: 2 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/9C7617026F4F09A686256A34005BD3E8.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/69-23-05

## The airworthiness directive

69-23-05 MESSERSCHMITT-BOLKOW Gmb.H.: Amdt. 39-873. Applies to Bolkow Model Bolkow Junior Aircraft, Serial Numbers 505 through 684.

Compliance is required as indicated unless already accomplished.

To prevent failures of the lower engine-mounting bolts within the next 100 hours' time in service after the effective date of this AD, replace the lower engine-mounting bolts P/N 298-21093.22 with new bolts P/N 208- 21093.22 in accordance with Messerschmitt-Bolkow Mounting Instructions No. 04/68, dated October, 1968, or an FAA-approved equivalent (Messerschmitt-Bolkow Service Bulletin No. 208-1/68, dated November 14, 1968, covers this same subject).

This amendment becomes effective December 11, 1969.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS A1EU](https://openairdocs.org/tcds/A1EU): Airbus Defence and Space GmbH; names 1 of 1 models: Bolkow Jr.

## Registered aircraft it may apply to (OpenAirDocs)

Matched by airframe and engine model; the AD's applicability may narrow it by serial number, part number or equipment.

- Aircraft: 2 (2 by airframe model, 0 by engine model)
- Makers: Bolkow 2

Models with the most aircraft:

- [Bolkow BOLKOW JR](https://openairdocs.org/model/bolkow-bolkow-jr): 2 aircraft (airframe model)

All 1 models: https://openairdocs.org/ad/69-23-05/models.md
Every aircraft: https://openairdocs.org/ad/69-23-05/aircraft.md

Its text cites no advisory circulars or STCs.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.