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Airworthiness Directive

AD 99-04-14 64 FR 7493 Active

Federal Aviation Administration · 14 CFR part 39

Requires a visual inspection of the bond line between the main rotor blade (blade) abrasion strip (abrasion strip) and the blade for voids, separation, or lifting of the abrasion strip; a visual inspection of the adhesive bead…

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FR document
99-3588
Amendment
39-11038
Published
1999-02-16
Models covered
1

Last live check: 2026-10-04

Printed from https://aircraftdirectives.com/ad/99-04-14 · AircraftDirectives restates official FAA and manufacturer records; the official sources named on this sheet control. Not an airworthiness determination.

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AD

99-04-14

FR doc 99-3588 · 64 FR 7493

AD 99-04-14Published 1999-02-16

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 a visual inspection of the bond line between the main rotor blade (blade) abrasion strip (abrasion strip) and the blade for voids, separation, or lifting of the abrasion strip; a visual inspection of the adhesive bead around the perimeter of the abrasion strip for erosion, cracks, or blisters; a tap (ring) test of the abrasion strip for debonding or hidden corrosion voids; and removal of any blade with an unairworthy abrasion strip and replacement with an airworthy blade.

Full official abstract

This amendment adopts a new airworthiness directive (AD), applicable to Schweizer Aircraft Corporation Model 269C-1 helicopters, that requires a visual inspection of the bond line between the main rotor blade (blade) abrasion strip (abrasion strip) and the blade for voids, separation, or lifting of the abrasion strip; a visual inspection of the adhesive bead around the perimeter of the abrasion strip for erosion, cracks, or blisters; a tap (ring) test of the abrasion strip for debonding or hidden corrosion voids; and removal of any blade with an unairworthy abrasion strip and replacement with an airworthy blade. This amendment is prompted by four reports that indicate that debonding and corrosion have occurred on certain blades where the abrasion strip attaches to the blade skin. The actions specified by this AD are intended to prevent loss of the abrasion strip from the blade and subsequent loss of control of the helicopter.

More directives for Schweizer 269 / 300

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  2. AD 2015-23-01 Airworthiness Directives; Sikorsky Aircraft Corporation (Type Certificat... Effective 2015-12-15
  3. AD 2015-11-09 Airworthiness Directives; Sikorsky Aircraft Corporation (Type Certificat... Effective 2015-07-14
  4. AD 2013-03-04 Airworthiness Directives; Schweizer Aircraft Corporation Effective 2013-03-19
  5. AD 2011-12-16 Airworthiness Directives; Schweizer Aircraft Corporation (Schweizer) Mod... Effective 2011-07-21

All Schweizer 269 / 300 directives

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Applies to 1 model in our index