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FAA orders · airworthiness directive · historical

2018-18-12: Engine Air Intake System

FAA order 2018-18-12 is an airworthiness directive in force since September 25, 2018. The FAA's subject line: Engine Air Intake System. It names Airbus Helicopters AS350 AStar (Écureuil), now H125: about 893 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
Airbus Helicopters
Models
AS-350B, AS-350B1, AS-350B2, AS-350B3, AS-350BA
On this site
Airbus Helicopters AS350 AStar (Écureuil), now H125 893 registered

Dates and paperwork

In force since
September 25, 2018
Published
September 10, 2018 (signed August 23, 2018)
Docket
FAA-2018-0613
Replaced by
2019-16-16
Status
Historical
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 Airbus Helicopters Model AS350B, AS350B1, AS350B2, AS350B3, and AS350BA helicopters with a Pall Aerospace Corporation inlet barrier filter (IBF) element. This AD requires revising the Rotorcraft Flight Manual Supplement to [[Page 45546]] prohibit operating a helicopter with an IBF element in wet weather and replacing the IBF element if wet. This AD is prompted by a forced landing after an engine flameout. The actions of this AD are intended to address an unsafe condition on these products.

The order itself the regulatory text, as published

Show the full text (3,790 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): 2018-18-12 Airbus Helicopters: Amendment 39-19391; Docket No. FAA- 2018-0613; Product Identifier 2018-SW-041-AD. (a) Applicability This AD applies to Model AS350B, AS350B1, AS350B2, AS350B3, and AS350BA helicopters, certificated in any category, with a Pall Aerospace Inlet Barrier Filter element part number CE01301F2 or CE01301F2B installed. (b) Unsafe Condition This AD defines the unsafe condition as ingestion of an excessive amount of water by the engine. This condition could result in engine flame out and failure, leading to loss ofhelicopter control. (c) Effective Date This AD becomes effective September 25, 2018. (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, revise the rotorcraft flight manual supplement (RFMS) by inserting Appendix A of this AD into the limitations section of the RFMS. (f) Special Flight Permits Special flight permits are prohibited. (g) Alternative Methods of Compliance (AMOCs) (1) The Manager, Atlanta ACO Branch, FAA, may approve AMOCs for this AD. Send your proposal to: Todd Jackson, Aerospace Engineer, Atlanta ACO Branch, Compliance and Airworthiness Division, FAA, 1701 Columbia Ave., College Park, GA 30337, telephone 404-474-5567, email [email protected]. (2) For operations conducted under a 14 CFR part 119 operating certificate or under 14 CFR part 91, subpartK, 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. (h) Additional Information Pall Corporation Service Information Letter CE01301F2SINFOL, Revision A, dated July 15, 2015, which is not incorporated by reference, contains additional information about the subject of this AD. For service information identified in this AD, contact Pall Aerospace Corporation, 10540 Ridge Road, Suite 300, Newport Richey, Florida 34654; telephone 727-514-6491; email [email protected]; website www.pall.com/aerospace. You may review this service information at the FAA, Office of the Regional Counsel, Southwest Region, 10101 Hillwood Pkwy., Room 6N-321, Fort Worth, TX 76177. (i) Subject Joint Aircraft Service Component (JASC) Code: 7160, Engine Air Intake System. Appendix A to AD2018-18-12 Rotorcraft Flight Manual Supplement (1) Helicopter operation is prohibited if the filter is wet or when visible moisture (rain/snow/ice/water) is present in the inlet or on the filter (inspect filter by hand for wetness). If the filter is wet, it must be dried or replaced prior to operation. (2) Helicopter flight is prohibited in visible moisture. (3) If the helicopter inadvertently enters precipitation (rain/ snow/ice/water), open bypass doors (if equipped), avoid sudden and rapid power transients, and land as soon as practical. (4) Inlet covers must be installed when the rotorcraft is not in flight to prevent moisture from collecting in the inlet or on the filter. (5) Inspect inlet and filter for visible moisture accumulation prior to flight. If moisture is present, helicopter operation is prohibited. [[Page 45548]]

Related safety bulletins advice on the same designs, not orders

2021-08-13AIR-21-13 · ENGINE EMERGENCY SHUTDOWN SYSTEM
2019-07-15SW-17-23R2 · Fuel System
2018-03-02SW-17-23R1 · Fuel System
2017-08-24SW-17-23 · Fuel System
2015-08-13SW-15-20 · Air Conditioning System Wiring

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 4, 2026. Connections as data: /graph/directive/2018-18-12.json · aircraft systems.