NTSB Identification: LAX83FUJ11.
The docket is stored on NTSB microfiche number 23785.
Accident occurred Tuesday, January 04, 1983 in PHOENIX, AZ
Aircraft: DOUGLAS A26C, registration: N25GH
Injuries: 3 Uninjured.

NTSB investigators either traveled in support of this investigation or conducted a significant amount of investigative work without any travel, and used data obtained from various sources to prepare this aircraft accident report.

THE LEFT GEAR RETRACTED. THE MODIFICATION OF THE ACFT FOR EXPERIMENTAL USE REDUCED ACCESS TO THE RUDDER TRIM CONTROL WITH THE GEAR SELECTOR IN THE DOWN POSITION. WITH THE SELECTOR IN NEUTRAL, IT WAS POSSIBLE TO APPLY LOADS TO THE GEAR WHICH REMOVED THE GEAR FROM THE POSITIVE DOWN & LOCKED POSITION. POSITIONING THE SELECTOR TO THE DOWN POSITION EXERTS 1500 PSI TOWARD THE DOWN POSITION. SUBSEQUENT TO THE ACCIDENT, THE OPERATOR RELOCATED THE RUDDER TRIM KNOB TO ALLOW RAPID 360 DEG OPERATION OF THE TRIM HANDLE WITH NO INTERFERENCE WHEN THE LANDING GEAR HANDLE IS IN THE DOWN POSITION.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

LANDING GEAR,GEAR LEVER..CLEARANCE

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