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Airworthiness Directive

AD 2015-23-01 80 FR 69571 Active

Federal Aviation Administration · 14 CFR part 39

Requires repetitively inspecting and lubricating the tail rotor (T/R) driveshaft splined fittings.

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FR document
2015-28313
Amendment
39-18317
Published
2015-11-10
Effective
2015-12-15
Models covered
1

Last live check: 2026-10-04

Printed from https://aircraftdirectives.com/ad/2015-23-01 · AircraftDirectives restates official FAA and manufacturer records; the official sources named on this sheet control. Not an airworthiness determination.

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AD

2015-23-01

FR doc 2015-28313 · 80 FR 69571

AD 2015-23-01Published 2015-11-10Effective 2015-12-15

FAA rule - 14 CFR 39

FAA rule. Compliance with an applicable AD is required under 14 CFR 39.7. Check its effective date, applicability, compliance times and current status.

Requires repetitively inspecting and lubricating the tail rotor (T/R) driveshaft splined fittings.

Full official abstract

We are adopting a new airworthiness directive (AD) for Sikorsky Aircraft Corporation (Sikorsky) Model 269A, 269A-1, 269B, 269C, 269C-1, 269D, and TH-55A helicopters. This AD requires repetitively inspecting and lubricating the tail rotor (T/R) driveshaft splined fittings. This AD was prompted by a report that the T/R driveshaft can disconnect due to deterioration of the splined coupling. The actions are intended to detect and prevent excessive wear of the splined coupling, which could lead to failure of the T/R driveshaft and subsequent loss of control of the helicopter.

More directives for Schweizer 269 / 300

  1. AD 2017-14-06 Airworthiness Directives; Sikorsky Aircraft Corporation Helicopters (Typ... Effective 2017-08-25
  2. AD 2015-11-09 Airworthiness Directives; Sikorsky Aircraft Corporation (Type Certificat... Effective 2015-07-14
  3. AD 2013-03-04 Airworthiness Directives; Schweizer Aircraft Corporation Effective 2013-03-19
  4. AD 2011-12-16 Airworthiness Directives; Schweizer Aircraft Corporation (Schweizer) Mod... Effective 2011-07-21
  5. AD 2010-16-08 Airworthiness Directives; Schweizer Aircraft Corporation (Schweizer) Mod... Effective 2010-08-20

All Schweizer 269 / 300 directives

View on Federal Register (opens in a new tab) View this AD in FAA DRS (opens in a new tab) Print AD packet (opens the full Federal Register document in a new tab)

Applies to 1 model in our index