AD 62-11-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Graviner | Fire Extinguishers | Airworthiness Directives; GRAVINER: Applies to Aircraft Equipped With Automatic Fire Extinguisher Cartridge Mark 2, A-716, A-717, A-718, A-719 and Fenwal P/N 690202-3, A-716, A-717, A-718, A-719 |
Unsafe Condition
The igniter wire in extinguisher cartridges may become corroded in service, leading to resistance readings outside the acceptable 5 to 6 ohms range and potential defective fuse wire.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Conduct a continuity inspection using a safety ohmmeter restricting current to 13 milliamperes. Replace defective Mark 2 cartridges with serviceable Mark 2 or improved Mark 3 cartridges. Repeat inspections every 550 hours' time in service or 120 days.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within the next 275 hours' time in service or the next 60 days, whichever occurs first after the effective date of this AD.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Graviner Fire Extinguishers equipped with Automatic Fire Extinguisher Cartridge Mark 2 (A-716, A-717, A-718, A-719) and Fenwal P/N 690202-3 (A-716, A-717, A-718, A-719). Fenwal installations noted are Graviner systems. Does not apply to Mark 3 cartridges.
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
This site is not affiliated with or endorsed by the FAA. Always verify with official sources.