# AD 75-16-08: Intermediate and High Pressure Compressors

- 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 22, 1975
- Superseded by: Nothing supersedes this AD
- Product type: Engine
- Amendment: 39-2274
- Registered aircraft: 196 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/D752E4D29695DD7B8625685F00518CF2.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/75-16-08

## The airworthiness directive

75-16-08 ROLLS ROYCE (1971) LIMITED: Amendment 39-2274. Applies to Rolls Royce RB211 series engines, serial numbers 10389 and prior.

Compliance required by December 31, 1975, unless already accomplished.

To prevent damage in the intermediate and high pressure compressors that contributes to the frequency of high power surges, accomplish the following:

1. Modify the inlet guide vane spherical trunnions, bearing pads, actuating rings, and bearing support segments in accordance with Rolls-Royce (1971) Limited Service Bulletin RB211-72-3326, dated November 14, 1973, or an FAA-approved equivalent.

2. Modify the intermediate pressure (IP) compressor inlet guide vanes in accordance with Rolls-Royce (1971) Limited Service Bulletin RB211-72-3335, Revision 2, dated March 12, 1974, or an FAA-approved equivalent.

3. Modify the IP compressor stator vanes in the 4th and 5th stage stator assemblies in accordance with Rolls-Royce (1971) Limited Service Bulletin RB211-72-3482, dated April 9, 1974, or an FAA-approved equivalent.

This amendment becomes effective August 22, 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/75-16-08/models.md
Every aircraft: https://openairdocs.org/ad/75-16-08/aircraft.md

Its text cites no advisory circulars or STCs.

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