NTSB Identification: LAX84FA487.
The docket is stored on NTSB microfiche number 27425.
Accident occurred Wednesday, September 19, 1984 in SANTA ANA, CA
Aircraft: CESSNA 550, registration: N88MJ
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.

AFTER COMPLETING A DUAL INSTRUCTIONAL FLT IN 91 TO 103 DEG WX, THE ACFT LANDED UNEVENTFULLY. THE PIC FAILED TO FOLLOW THE REQUIRED PROCEDURE IN THE FLIGHT MANUAL OF TURNING OFF THE ANTI-SKID SWITCH AFTER CLEARING THE RWY. RATHER, HE USED THE OUTDATED PROCEDURE IN AN OLD CHECKLIST CARD & LEFT THE ANTI-SKID SWITCH ON. AS THE PIC PARKED THE ACFT THE ANTI-SKID CONTROL UNIT MALFUNCTIONED & RELEASED BRAKE PRESSURE. BY THE TIME THE PIC REGAINED CONTROL BY ACTIVATING THE EMERGENCY PNEUMATIC BRAKE SYSTEM, THE ACFT HAD COLLIDED WITH A CESSNA 500 & AN AERO COMMANDER 500S. TWO YEARS EARLIER A SERVICE LETTER HAD BEEN ISSUED STATING THAT THE ANTI-SKID CONTROL UNIT COULD MALFUNCTION AT TEMPS OVER 100 DEG F. THE OPERATOR HAD FAILED TO COMPLY WITH THE SL & HAD NOT SUBMITTED THE UNIT FOR MODIFICATION. WITHIN THE PAST MONTH THE PIC & THE COMPANY CHIEF PLT HAD OBTAINED TYPE RATINGS IN THE ACFT FROM A DESIGNATED PLT EXAMINER.

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

EMERGENCY PROCEDURE..DELAYED..PILOT IN COMMAND

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

LANDING GEAR,ANTI-SKID BRAKE SYSTEM..FAILURE,TOTAL



Contributing Factors

FLIGHT MANUALS..NOT FOLLOWED..PILOT IN COMMAND






Contributing Factors

INADEQUATE CERTIFICATION/APPROVAL,AIRMAN..FAA(ORGANIZATION)


Contributing Factors

MAINTENANCE,SERVICE BULLETIN/LETTER..NOT PERFORMED..PILOT IN COMMAND


Contributing Factors

INADEQUATE TRAINING(EMERGENCY PROCEDURE(S))..CHECK PILOT

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