# AD 86-21-11: Engine Oil Cooler & Placard

- Type: Airworthiness directive
- Status: Current
- Products: Embraer - Empresa Brasileira de Aeronautica EMB-120 and EMB-120RT
- Effective: February 17, 1987
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Large airplane
- Amendment: 39-5535
- Registered aircraft: 3 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/CF44449AC0580946862569ED0069F22A.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/86-21-11

## The airworthiness directive

86-21-11 EMPRESA BRASILEIRA DE AERONAUTICA S.A.: Amendment 39-5535. Applies to Embraer Model EMB-120 series airplanes; serial numbers 12004, 12006 through 120028, 120033, and 120034; equipped with engine oil coolers, part numbers 160282-1 or 160282-2, which have accumulated more than 200 hours time-in-service; certificated in any category. Compliance is required within the next 10 hours time-in-service after the effective date of this AD, unless previously accomplished.

To prevent oil loss and in-flight engine shutdown, accomplish the following:

A. Fabricate and install on the instrument panel near the altimeter, in full view of the pilot, a placard that reads: "MAXIMUM OPERATING LIMITATION 10,000 FEET MSL."

B. Installation of engine oil cooler part number 160282-3 or subsequent, constitutes terminating action for the requirements of this AD.

This amendment becomes effective February 17, 1987, as to all persons, except those persons to whom it was made immediatelyeffective by Priority Letter AD 86-21-11, issued October 22, 1986.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS A31SO](https://openairdocs.org/tcds/A31SO): Embraer S.A.; names 2 of 5 models: EMB-120, EMB-120RT

## 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: 3 (3 by airframe model, 0 by engine model)
- Makers: Embraer 3

Models with the most aircraft:

- [Embraer EMB-120](https://openairdocs.org/model/embraer-emb-120): 3 aircraft (airframe model)

All 1 models: https://openairdocs.org/ad/86-21-11/models.md
Every aircraft: https://openairdocs.org/ad/86-21-11/aircraft.md

Its text cites no advisory circulars or STCs.

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