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Airworthiness Directive

AD 98-05-10 63 FR 10301 Active

Federal Aviation Administration · 14 CFR part 39

Requires replacing the aluminum elbows that connect the oil cooler lines to the engine accessory case with steel elbows.

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FR document
98-5353
Amendment
39-10371
Published
1998-03-03
Effective
1998-03-18
Models covered
1

Last live check: 2026-08-19

Printed from https://aircraftdirectives.com/ad/98-05-10 · AircraftDirectives restates official FAA and manufacturer records; the official sources named on this sheet control. Not an airworthiness determination.

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AD

98-05-10

FR doc 98-5353 · 63 FR 10301

AD 98-05-10Published 1998-03-03Effective 1998-03-18

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 replacing the aluminum elbows that connect the oil cooler lines to the engine accessory case with steel elbows.

Full official abstract

This amendment adopts a new airworthiness directive (AD) that is applicable to Robinson Helicopter Company (Robinson) Model R44 helicopters. This action requires replacing the aluminum elbows that connect the oil cooler lines to the engine accessory case with steel elbows. This amendment is prompted by two reports of cracks that were discovered in aluminum elbows. The actions specified in this AD are intended to prevent failure of either the 45 deg. or 90 deg. aluminum elbows that connect the oil lines from the oil cooler to the engine accessory case, which would cause loss of engine oil, resulting in an engine failure and a subsequent forced landing.

More directives for Robinson R44

  1. AD 2025-11-07 Airworthiness Directives; Robinson Helicopter Company Helicopters Effective 2025-07-11
  2. AD 2024-23-01 Airworthiness Directives; Robinson Helicopter Company Effective 2025-01-07
  3. AD 2024-20-03 Airworthiness Directives; Robinson Helicopter Company Helicopters Effective 2024-11-29
  4. AD 2024-19-11 Airworthiness Directives; Robinson Helicopter Company Helicopters Effective 2024-10-31
  5. AD 2024-04-02 Airworthiness Directives; Robinson Helicopter Company Helicopters Effective 2024-04-02

All Robinson R44 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