NTSB Identification: FTW83FA088.
The docket is stored on NTSB microfiche number 21805.
Accident occurred Sunday, January 16, 1983 in CARROLLTON, TX
Aircraft: CESSNA 172N, registration: N737VQ
Injuries: 1 Serious,2 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 PLT REPORTED THAT DURING ARRIVAL, HE ENTERED THE DOWNWIND WITH NO PROBLEM; HOWEVER, WHEN HE ATTEMPTED TO TURN ON A LEFT BASE, THE AILERON CONTROL LOCKED UP. HE STATED HE COULD TURN NEITHER LEFT NOR RIGHT BY USING AILERONS. REPORTEDLY, THE ACFT WOULD BANK TO THE RIGHT WHEN HE USED LEFT RUDDER & VICE VERSA. THE PLT DECLARED AN EMERGENCY. AFTER CONTINUING WESTERLY APRX 6 MI, HE REDUCED POWER & LANDED IN A WHEAT FLD. DURING HE LANDING ROLL, THE NOSE GEAR HIT A DITCH & COLLAPSED AND THE ACFT NOSED OVER. AN EXAM OF THE FLT CONTROLS FAILED TO DISCLOSE ANY PREIMPACT FAILURE OR MALFUNCTION. A CHECK OF THE AUTO-PILOT REVEALED THAT THE CONTROL SERVO, PN 1C-465-1-732, WAS COVERED WITH AN OILY APPEARING SUBSTANCE THAT WAS STICKY, AND WOULD NOT SLIP UNTIL WELL ABOVE THE SPECIFIED 42 LBS OF CABLE TENSION. NO OTHER PREIMPACT MALFUNCTIONS OR FAILURES OF THE ACFT WERE FOUND. THE RELATIVELY INEXPERIENCED PLT DID NOT REMEMBER ENGAGING THE AUTO-PILOT.

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

PROCEDURES/DIRECTIVES..NOT FOLLOWED..PILOT IN COMMAND


Contributing Factors

MAINTENANCE..INADEQUATE


Contributing Factors

LANDING GEAR,NOSE GEAR..OVERLOAD


Contributing Factors

AUTOPILOT/FLIGHT DIRECTOR,SERVO..CONTAMINATION


Contributing Factors

LACK OF TOTAL EXPERIENCE..PILOT IN COMMAND


Contributing Factors

PRECAUTIONARY LANDING..PERFORMED..PILOT IN COMMAND


Contributing Factors

AUTOPILOT/FLIGHT DIRECTOR,SERVO..MOVEMENT RESTRICTED


Contributing Factors

AUTOPILOT/FLIGHT DIRECTOR,SERVO..ENGAGED


Contributing Factors

TERRAIN CONDITION..DITCH


Contributing Factors

AUTOPILOT..INADVERTENT..PILOT IN COMMAND


Contributing Factors

FLT CONTROL SYST,AILERON CONTROL..MOVEMENT RESTRICTED

Index for Jan1983 | Index of months