AD 82-26-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Viking Air Limited | DHC-6-1 | Airworthiness Directives; DeHavilland Model DHC-6 Series Airplanes |
| aircraft | Viking Air Limited | DHC-6-100 | Airworthiness Directives; DeHavilland Model DHC-6 Series Airplanes |
| aircraft | Viking Air Limited | DHC-6-200 | Airworthiness Directives; DeHavilland Model DHC-6 Series Airplanes |
| aircraft | Viking Air Limited | DHC-6-300 | Airworthiness Directives; DeHavilland Model DHC-6 Series Airplanes |
Unsafe Condition
Leakage of isopropyl alcohol in the crew compartment and a possible crew compartment fire.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Within 25 hours time-in-service after the effective date, and each 200 hours time-in-service thereafter, inspect the windscreen washer/deicing system for leaks per S/B No. 6/422, Rev A. Replace defective components causing leaks and secure tubing per steps 3 and 6. Install placards on the fluid tank filler and system switch by November 30, 1983. For icing-certified airplanes, install an electrically heated windscreen per Modification S.0.0.6007, Issue 7.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within the next 25 hours time-in-service after the effective date of this AD, and each 200 hours time-in-service thereafter
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Affected Aircraft
DeHavilland Model DHC-6 (serial numbers 1 through 709, 711 through 735, 737 through 753, 755 through 761, 763 through 779, and 791) with windscreen washer/deicing system.
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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