AD 86-16-51
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Bombardier Inc. | DHC-8-101 | Airworthiness Directives; DeHavilland Model DHC-8 Airplanes |
| aircraft | Bombardier Inc. | DHC-8-102 | Airworthiness Directives; DeHavilland Model DHC-8 Airplanes |
| aircraft | Bombardier Inc. | DHC-8-103 | Airworthiness Directives; DeHavilland Model DHC-8 Airplanes |
| aircraft | Bombardier Inc. | DHC-8-106 | Airworthiness Directives; DeHavilland Model DHC-8 Airplanes |
| aircraft | Bombardier Inc. | DHC-8-201 | Airworthiness Directives; DeHavilland Model DHC-8 Airplanes |
| aircraft | Bombardier Inc. | DHC-8-202 | Airworthiness Directives; DeHavilland Model DHC-8 Airplanes |
| aircraft | Bombardier Inc. | DHC-8-301 | Airworthiness Directives; DeHavilland Model DHC-8 Airplanes |
| aircraft | Bombardier Inc. | DHC-8-311 | Airworthiness Directives; DeHavilland Model DHC-8 Airplanes |
| aircraft | Bombardier Inc. | DHC-8-315 | Airworthiness Directives; DeHavilland Model DHC-8 Airplanes |
Unsafe Condition
Uncommanded retraction of the main landing gear during takeoff, landing, or ground operations.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Insert AD in AFM and revise procedures to isolate main landing gear hydraulics by following specific flight manual steps including setting nosewheel steering to OFF, prohibiting crosswinds over 20 knots, and incorporating DHC Modification 8/0567 via Service Bulletin 8-32-35 by November 1, 1986.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
before further flight, unless previously accomplished
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
DeHavilland Model DHC-8 airplanes, serial numbers 003, 005, and subsequent, with specified models: DHC-8-101, DHC-8-102, DHC-8-103, DHC-8-106, DHC-8-201, DHC-8-202, DHC-8-301, DHC-8-311, DHC-8-315.
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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