AD 91-02-05
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | GQ Security Parachutes | Parachute Canopies | Airworthiness Directives; GQ SECURITY PARACHUTES, INC. Model No. 79A1684-( ) Parachute Canopies approved under TSO C23b. |
Unsafe Condition
Failure of parachute canopy due to deteriorating canopy material, including deteriorating fabric tensile strength and acidic mesh (netting) material.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Remove or obliterate TSO C23b marking and remove canopy from service prior to further use after June 17, 1988. For canopies previously granted an alternate means of compliance, at the next repack after the effective date, test canopy fabric tensile strength per PIA Technical Standard 108 and test mesh material acidity using Bromocresol Green Solution. Neutralize acidity if present. Acceptable prior tests under AD 88-05-08 may be used.
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Compliance Time
Prior to further use after June 17, 1988. For canopies previously granted an alternate means of compliance, at the next repack after the effective date of this amendment (January 14, 1991).
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Affected Aircraft
GQ Security Parachutes, Inc. Model No. 79A1684-( ) Parachute Canopies approved under TSO C23b.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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