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86-21-11: Engine Oil Cooler & Placard

FAA order 86-21-11 is an airworthiness directive in force since February 17, 1987. The FAA's subject line: Engine Oil Cooler & Placard. It names Embraer EMB-120: about 41 aircraft on the U.S. register today, though an order usually covers particular versions or serial numbers rather than every one. System: engine.

What it applies to as the FAA lists it

Kind of product
Aircraft
Makes
Embraer - Empresa Brasileira de Aeronautica S.A.
Models
EMB-120, EMB-120RT
On this site
Embraer EMB-120 41 registered

Dates and paperwork

In force since
February 17, 1987
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 (1,058 characters)
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.

Related safety bulletins advice on the same designs, not orders

2008-12-11NM-09-03 · Engine Fuel and Control - Implementing Fuel Tank System Airworthiness Limitations
2007-12-07NM-08-10 · Instruments - Potentiometers
2006-04-14NM-06-39 ·

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 November 2, 2026. Connections as data: /graph/directive/86-21-11.json · aircraft systems.