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Airworthiness Directive

AD 98-07-17 63 FR 16679 Active

Federal Aviation Administration · 14 CFR part 39

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FR document
98-8579
Amendment
39-10437
Published
1998-04-06
Effective
1998-05-29
Models covered
1

Last live check: 2026-08-19

Printed from https://aircraftdirectives.com/ad/98-07-17 · AircraftDirectives restates official FAA and manufacturer records; the official sources named on this sheet control. Not an airworthiness determination.

This page is a reference Record, not an airworthiness or compliance determination. Official FAA and manufacturer sources control over our restatement, subject to governing law. Check applicability, current requirements and incorporated documents before acting. The owner or operator remains responsible for airworthiness and required records under 14 CFR 91.403 and 91.417, as applicable. Terms of Use: /terms.

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AD

98-07-17

FR doc 98-8579 · 63 FR 16679

AD 98-07-17Published 1998-04-06Effective 1998-05-29

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 the following on Twin Commander Aircraft Corporation (Twin Commander) 500, 520, 560, 680, 681, 685, 690, 695, and 720 series airplanes: inspecting (one-time) the flap system for cables with broken wires or pulleys with worn cable clips, replacing any damaged parts, and replacing the master pulley and cable with new parts of improved design.

Supersedes an earlier directive that is not in our index. See the official text.

Full official abstract

This amendment supersedes Airworthiness Directive (AD) 94-04- 17, which currently requires the following on Twin Commander Aircraft Corporation (Twin Commander) 500, 520, 560, 680, 681, 685, 690, 695, and 720 series airplanes: inspecting (one-time) the flap system for cables with broken wires or pulleys with worn cable clips, replacing any damaged parts, and replacing the master pulley and cable with new parts of improved design. This AD requires inspecting all flap system cable grooves for the correct width, inspecting all flap system pulleys for rubbing on the support brackets, inspecting all flap pulley cable assemblies for frayed wires, and reworking or replacing any parts with discrepancies. This AD results from several reports of worn and frayed flap system cables attributed to flap pulley grooves that are too narrow. The actions specified by this AD are intended to prevent failure of a flap system cable caused by fatigue, which could result in loss of control of the airplane.

More directives for Twin Commander (Aero Commander)

  1. AD 2013-09-05 Airworthiness Directives; Twin Commander Aircraft LLC Airplanes Effective 2013-05-29
  2. AD 2009-25-02 Airworthiness Directives; Twin Commander Aircraft LLC Models 690, 690A, ... Effective 2010-01-08
  3. AD 2006-15-01 Airworthiness Directives; Twin Commander Aircraft Corporation Models 690... Effective 2006-08-21
  4. AD 2003-07-03 Airworthiness Directives; Twin Commander Aircraft Corporation Models 690... Effective 2003-05-16
  5. AD 2000-02-30 Airworthiness Directives; Twin Commander Aircraft Corporation 600 Series... Effective 2000-03-24

All Twin Commander (Aero Commander) 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