# NTSB LAX84FA487: Cessna 550, N88MJ, Santa Ana, CA, September 19, 1984

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Field investigation · Final report
- Date: September 19, 1984, 14:20 local (21:20 UTC)
- Place: Santa Ana, CA
- Coordinates: 33.71067, -117.87078 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=33.7107&lon=-117.8708&mi=10
- Phase of flight: [Taxi](https://openairdocs.org/ntsb-phases/250) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 3 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 24004
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX84FA487
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/24004/pdf
- Page: https://openairdocs.org/ntsb/LAX84FA487

## Sequence of events

In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf).

- Airframe/component/system failure/malfunction, taxi - from landing
  - aircraft manuals,procedure information - unapproved
  - flight manuals - not followed, pilot in command (contributing factor)
  - condition(s)/step(s) not listed, company/operator management
  - inadequate certification/approval,manufacturer, faa(organization)
  - inadequate certification/approval,airman, faa(organization) (contributing factor)
  - landing gear,anti-skid brake system - failure,total (cause)
  - maintenance,service bulletin/letter - not performed, pilot in command (contributing factor)
  - inadequate training(emergency procedure(s)), check pilot (contributing factor)
- On ground/water collision with object, taxi - from landing
  - emergency procedure - delayed, pilot in command (cause)
  - landing gear,emergency brake system - engaged
  - object - aircraft parked/standing

## Analysis

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 RATHER, HE USED THE OUTDATED PROCEDURE IN AN OLD CHECKLIST CARD & LEFT THE ANTI-SKID SWITCH ON.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

## Aircraft

- Registration: N88MJ (not matched to a registry record)
- Reported make and model: CESSNA 550
- Category: Airplane
- Serial number: 550-0089
- Airframe hours: 2113
- Engines: P&W JT15D-4 2500 lbs thrust turbo fan
- Damage: Substantial damage
- Flight: Instructional, Part 91
- Operator: Atlas Hotels
- Registered owner: Mangt Jet International
- Airworthiness certificate: Standard, Transport
- Last inspection: Annual, August 22, 1984, 31 hours before
- Departed: ONT, ONTARIO, CA
- Destination: SNA, SANTA ANA, CA
- Flight plan: IFR
- Airport: SNA, John Wayne Airport, runway 19R, 5,700 × 150 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 31; airline transport; airplane ratings: single-engine land, multi-engine land, single-engine sea; instrument ratings: airplane; medical: class 1, valid medical--w/ waivers/lim; seat: left; flight hours: 3,720 total, 72 in this make and model, 2,560 as pilot in command, 112 in the last 90 days, 35 in the last 30 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: 220° at 10 knots
- Visibility: 7 statute miles
- Lowest ceiling: none
- Temperature: 91 °F, dew point 68 °F
- Altimeter: 29.00 inHg
- Observed at: SNA

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 19840919054279A](https://openairdocs.org/incident/19840919054279A), Sep 19, 1984: Cessna 550, Santa Ana, CA, Substantial damage. Collided with 2 parked aircraft. Malfunction of anti skid control box. Updated checklist not provided by lesser.

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

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