AD 84-23-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Fokker Services | F27 Mark 050 | Airworthiness Directives; FOKKER B.V. Model F27 Airplanes |
| aircraft | Fokker Services | F27 Mark 100 | Airworthiness Directives; FOKKER B.V. Model F27 Airplanes |
| aircraft | Fokker Services | F27 Mark 200 | Airworthiness Directives; FOKKER B.V. Model F27 Airplanes |
| aircraft | Fokker Services | F27 Mark 300 | Airworthiness Directives; FOKKER B.V. Model F27 Airplanes |
| aircraft | Fokker Services | F27 Mark 400 | Airworthiness Directives; FOKKER B.V. Model F27 Airplanes |
| aircraft | Fokker Services | F27 Mark 500 | Airworthiness Directives; FOKKER B.V. Model F27 Airplanes |
| aircraft | Fokker Services | F27 Mark 600 | Airworthiness Directives; FOKKER B.V. Model F27 Airplanes |
| aircraft | Fokker Services | F27 Mark 700 | Airworthiness Directives; FOKKER B.V. Model F27 Airplanes |
Unsafe Condition
Failure of portable fire extinguisher cartridges due to improper cartridge holders, improper rubber sleeves in fuel vent system causing fuel leakage, and leakage from fluid dampers in main and nose landing gear actuating rams.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect cartridge holders per Fokker SB F27/26-18 within 90 days; inspect fuel tank ventilation system and replace unsatisfactory parts per Fokker SB F27/28-55 within 90 days; modify actuating rams per Fokker SB F27/32-143 or Dunlop SBs 36-262/263 within 180 days.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
within 90 days after the effective date of this AD (for A and B) and within 180 days after the effective date of this AD (for C)
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
FOKKER B.V. Model F27 Mark 050, 100, 200, 300, 400, 500, 600 airplanes as specified in the applicability of the referenced service bulletins.
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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