AD 83-23-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Kelowna Flightcraft R & D Ltd. | 240 Series | Airworthiness Directives; GENERAL DYNAMICS (Convair) Models 240-27 Aircraft |
Unsafe Condition
Undetected failure of the door open warning system
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Install the secondary lock warning switch on the main entrance door and connect it in series with the other two main entrance door open warning switches. Reconfigure the 28 volts DC and ground circuits associated with the aft cargo door open warning switch, the door open warning relay, the lower forward compartment door open warning switch, and the main entry door warning switches. Perform a functional check of the door open warning system including inspecting and checking the primary and secondary lock door open warning switches and checking all door open warning light circuitry for proper operation.
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Compliance Time
within 30 days or 100 hours time in service, whichever occurs first, after the effective date of this AD
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Affected Aircraft
General Dynamics (Convair) Models 240-27 converted from T-29B and 240-52 converted from T29D aircraft for civil passenger or cargo use by Hamilton Aviation Company STC SA4025WE or SA4026WE
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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