# AD 75-16-09: HS External Gearbox Oil Tank Filler Cap And Housing

- Type: Airworthiness directive
- Status: Current
- Products: Rolls-Royce RB211-22B-02, RB211-22B/MOD 72-8700, RB211-524B-02, RB211-524B-B-02, RB211-524B2-19, RB211-524B2-B-19, RB211-524B3-02, RB211-524B4-02, RB211-524B4-D-02, RB211-524C2-19, RB211-524C2-B-19, RB211-524D4-19 and 13 more
- Effective: August 27, 1975
- Superseded by: Nothing supersedes this AD
- Product type: Engine
- Amendment: 39-2281
- Registered aircraft: 196 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/7CB28729820911948625685F0051AB94.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/75-16-09

## The airworthiness directive

75-16-09 ROLLS ROYCE (1971) LIMITED: Amendment 39-2281. Applies to Rolls Royce RB 211 series engines, serial numbers 10479 and prior.

Compliance required before September 1, 1975, unless already accomplished.

To prevent engine loss of oil and possible inflight engine shutdown, modify the HS external gearbox oil tank filler cap and housing in accordance with Rolls Royce (1971) Limited Service Bulletin RB211-72-3533, dated August 12, 1974, or an FAA-approved equivalent.

This amendment becomes effective August 27, 1975.

## Affected data sheets (2) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS E12EU](https://openairdocs.org/tcds/E12EU): Rolls-Royce Deutschland Ltd & Co KG; names 16 of 22 models: RB211-524B3-02, RB211-524C2-B-19, RB211-524B2-19, RB211-524B-02, RB211-524B-B-02, RB211-524D4-19, RB211-524D4X-19, RB211-524C2-19…
- [TCDS E30NE](https://openairdocs.org/tcds/E30NE): Rolls-Royce Deutschland Ltd & Co KG; names 8 of 8 models: RB211-524H-T-36, RB211-524H-36, RB211-524G2-19, RB211-524G2-T-19, RB211-524H2-T-19, RB211-524G3-19, RB211-524G3-T-19, RB211-524H2-19

## 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: 196 (0 by airframe model, 196 by engine model)
- Makers: Boeing 193, Lockheed 2, Airbus 1

Models with the most aircraft:

- [Rolls-Royce RB-211 series](https://openairdocs.org/engine/rolls-royce-rb-211-series): 182 aircraft (engine model)
- [Rolls-Royce RB-211-22 series](https://openairdocs.org/engine/rolls-royce-rb-211-22-series): 8 aircraft (engine model)
- [Rolls-Royce RB211-524H-36](https://openairdocs.org/engine/rolls-royce-rb211-524h-36): 2 aircraft (engine model)
- [Rolls-Royce RB211-524HT36](https://openairdocs.org/engine/rolls-royce-rb211-524ht36): 2 aircraft (engine model)
- [Rolls-Royce RB211-22B-02](https://openairdocs.org/engine/rolls-royce-rb211-22b-02): 1 aircraft (engine model)
- [Rolls-Royce RB211-524B4 series](https://openairdocs.org/engine/rolls-royce-rb211-524b4-series): 1 aircraft (engine model)

All 6 models: https://openairdocs.org/ad/75-16-09/models.md
Every aircraft: https://openairdocs.org/ad/75-16-09/aircraft.md

Its text cites no advisory circulars or STCs.

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