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2012-12-11: Engine EFT/TOT Indicating System

FAA order 2012-12-11 is an airworthiness directive in force since July 24, 2012. The FAA's subject line: Engine EFT/TOT Indicating System. It names Bell 206 JetRanger and LongRanger: about 1,453 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
Bell Helicopter Textron Canada Limited
Models
206, 206A, 206A-1 (OH-58A), 206B, 206B-1, 206L, 206L-1, 206L-3, 206L-4
On this site
Bell 206 JetRanger and LongRanger 1,453 registered

Dates and paperwork

In force since
July 24, 2012
Published
June 19, 2012 (signed June 7, 2012)
Docket
FAA-2012-0087
Status
Current
The FAA's document
Read the order on the FAA's site

The FAA's summary their words, unchanged

We are adopting a new airworthiness directive (AD) for Bell Helicopter Textron Canada (Bell) Model 206, 206A, 206A-1, 206B, 206B-1, 206L, 206L-1, 206L-3, and 206L-4 helicopters, with Aviation Specialties Unlimited, Inc. (ASU), Night Vision Imaging System (NVIS) lighting modified by Supplemental Type Certificate SR01383SE (STC). This AD requires determining the date of STC installation, determining if the aircraft has an unfiltered turbine outlet temperature (TOT) internal over-temperature warning light, and based on those findings, installing an NVIS filter. This AD was prompted by the finding that an unfiltered TOT indicator over-temperature warning light, when illuminated, created glare and reflections that could degrade the pilot's view while using night vision goggles thereby creating an unsafe condition. The actions of this AD are intended to modify any unfiltered TOT indicator unit over-temperature warning light by installing a filter to prevent degradation of the pilot's vision while using night vision goggles and to prevent subsequent loss of control of the helicopter.

The order itself the regulatory text, as published

Show the full text (3,431 characters)
Adoption of the Amendment Accordingly, under the authority delegated to me by the Administrator, the FAA amends 14 CFR part 39 as follows: PART 39--AIRWORTHINESS DIRECTIVES 0 1. The authority citation for part 39 continues to read as follows: Authority: 49 U.S.C. 106(g), 40113, 44701. Sec. 39.13 [Amended] 0 2. The FAA amends Sec. 39.13 by adding the following new airworthiness directive (AD): 2012-12-11 BELL HELICOPTER TEXTRON CANADA, LIMITED (BELL): Amendment 39-17091; Docket No. FAA-2012-0087; Directorate Identifier 2011-SW- 029-AD. (a) Applicability This AD applies to Model 206, 206A, 206A-1, 206B, 206B-1, 206L, 206L-1, 206L-3, and 206L-4 helicopters, certificated in any category, modified with Aviation Specialties Unlimited, Inc. (ASU), Night Vision Imaging System (NVIS) lighting installed per Supplemental Type Certificate (STC) SR01383SE. (b) Unsafe Condition This AD defines the unsafe condition as an unfiltered turbine outlet temperature (TOT) indicator over-temperature warning light, when illuminated, creating glare and reflections that could degrade the pilot's view through night vision goggles. This condition could result in loss of control of the helicopter. (c) Effective Date This AD becomes effective July 24, 2012. (d) Compliance You are responsible for performing each action required by this AD within the specified compliance time unless it has already been accomplished prior to that time. (e) Required Actions Within 30 days or 50 hours time-in-service, whichever occurs first: (1) Determine the date of the STC installation. (2) If the date of the STC installation is on or before April 6, 2011, or the date is undocumented, determine whether the cockpit TOT indicator unit has an unfiltered internal over-temperature warning light. If the unit has an unfiltered internal over-temperature warning light, install an NVIS filter, part number ASU-TOTGAG-1. (f) Alternative Methods of Compliance (AMOCs) (1) The Manager, Seattle Aircraft Certification Office, FAA, may approve AMOCs for this AD. Send your proposal to: Kathleen Arrigotti, Aviation Safety Engineer, Seattle Aircraft Certification Office, Transport Airplane Directorate, FAA, 1601 Lind Avenue SW., Renton, WA 98057; telephone (425) 917-6426; email [email protected]. (2) For operations conducted under a 14 CFR part 119 operating certificate or under 14 CFR part 91, subpart K, we suggest that you notify your principal inspector, or lacking a principal inspector, the manager of the local flight standards district office or certificate holding district office, before operating any aircraft complying with this AD through an AMOC. (g) Additional Information Aviation Specialties Unlimited, Inc., Alert Service Bulletin No. ASU 206-2010-11-1, dated November 4, 2010, which is not incorporated by reference, contains additional information about the subject of this AD. For service information identified in this AD, contact Aviation Specialties Unlimited, Inc., 4632 Aeronca Street, Boise, Idaho 83705; telephone (208) 426-8117; fax (208) 426-8975; or http://www.asu-nvg.com/. You may review this service information at the FAA, Office of the Regional Counsel, Southwest Region, 2601 Meacham Blvd., Room 663, Fort Worth, Texas 76137. (h) Subject Joint Aircraft Service Component (JASC) Code: 7722, Engine EFT/ TOT Indicating System.

Related safety bulletins advice on the same designs, not orders

2019-12-05SW-19-18 · Fuselage Cracks
2019-04-04SW-19-05 · Tail Rotor Drive System, Spline Damage
2017-11-02SW-18-02 · Loss of Hardware Tail Rotor Drive Shaft Couplings
2015-08-13SW-15-20 · Air Conditioning System Wiring
2012-10-03SW-12-45 · Garmin Model 400W/500W Series GPS-WAAS Navigation System

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/2012-12-11.json · aircraft systems.