Accident Cessna 550 Citation II N88MJ, Wednesday 19 September 1984

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Date:	Wednesday 19 September 1984
Time:	14:20 LT
Type:	Cessna 550 Citation II
Owner/operator:	Atlas Hotels
Registration:	N88MJ
MSN:	550-0089
Total airframe hrs:	2113 hours
Engine model:	P&W JT15D-4
Fatalities:	Fatalities: 0 / Occupants: 3
Other fatalities:	0
Aircraft damage:	Substantial
Category:	Accident
Location:	Santa Ana, CA - United States of America
Phase:	Taxi
Nature:	Training
Departure airport:	Ontario, CA (KONT)
Destination airport:	Santa Ana, CA (KSNA)
Investigating agency:	NTSB
Confidence Rating:	Accident investigation report completed and information captured

Narrative:
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 RATHER, HE USED THE OUTDATED PROCEDURE IN AN OLD CHECKLIST CARD & LEFT THE ANTI-SKID SWITCH ON.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.

Probable Cause:

Accident investigation: