# NTSB CHI89MA132: Mcdonnell Douglas DC8-63F, N950R, Vandalia, OH, July 13, 1989

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Major investigation · Final report
- Date: July 13, 1989, 01:13 local (05:13 UTC)
- Place: Vandalia, OH
- Coordinates: 39.869556, -84.190879 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=39.8696&lon=-84.1909&mi=10
- Phase of flight: [Taxi](https://openairdocs.org/ntsb-phases/250) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 3 uninjured
- Status: Completed, report September 5, 1991
- Report: Approved by Office Director
- NTSB case key (mKey): 14431
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI89MA132
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/14431/pdf
- Page: https://openairdocs.org/ntsb/CHI89MA132

## Probable cause

FAILURE OF THE LEFT MAIN LANDING GEAR, BOGIE TRIM CYLINDER, AND MALFUNCTION OF THE EMERGENCY AIRBRAKE CONTROL VALVE.

## 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
  - landing gear,normal brake system - failure,total (cause)
  - landing gear,emergency brake system - inoperative (cause)
- On ground/water collision with object, taxi
  - object - aircraft parked/standing (contributing factor)

## Analysis

AS THE MCDONNELL DOUGLAS DC8 CREW BGN THE AFTER LNDG CHECK, A DECREASE IN QNTY OF HYD PRES WAS NOTED. THE CAPT ELECTED TO LEAVE THE FLAPS EXTDD, THOUGH THE SPOILERS WERE RETRACTED. HYD PRES RMND NML & THE CREW CONTD TO THE RAMP. WHILE TAXIING, THE QNTY SUDDENLY WENT TO ZERO; THE NOSEWHEEL STEERING & NML BRAKES BCM INOP. ATMTS TO STOP BY USING EMERG PNEUMATIC BRAKING WERE UNSUCCESSFUL. THE CAPT TRIED TO REVERSE THRUST FM #2 & #3 ENGS, BUT THEY WOULD NOT REVERSE (#1 & #4 ENGS WERE SHUT DWN). THE ACFT WAS ON A SLOPE; IT SUBSEQUENTLY ROLLED INTO A BOEING 727. AN EXAM REVEALED THE BOGIE TRIM CYL, PN 5616554-5503, ON THE L MAIN LNDG GEAR HAD RUPTURED. THE AIR BOTTLE FOR PNEUMATIC BRAKING WAS CHARGED TO OPERG PRES, BUT MOVEMENT OF THE AIRBRAKE LEVER WOULD NOT OPER THE CTL VLV, PN 25600-5001; THOUGH NO ANOMALIES WERE FND IN RIGGING/ALIGNMENT. MANUFACTURER DIDN'T PROVIDE A RCMDD INTERVAL FOR CHECKING THE PNEUMATIC BRAKING SYS, BUT THE OPER-ATOR CHECKED IT AT 25,000 HR (D-CHECK) INTERVALS; THE ACFT HAD BEEN OPERD 19,339 HRS, SINCE THE VLV WAS LAST CHECKED.

## Aircraft

- Registration: [N950R](https://openairdocs.org/deregistered/N950R-2013-09-17), registration cancelled 2013-09-17, S/N 45903, built 1967 (OpenAirDocs)
- Reported make and model: MCDONNELL DOUGLAS DC8-63F
- Registry model: [Mcdonnell Douglas DC-8-63](https://openairdocs.org/model/mcdonnell-douglas-dc-8-63) (registry code 302198B) (OpenAirDocs)
- Registry engine: [Pratt & Whitney JT3D series](https://openairdocs.org/engine/pratt-whitney-jt3d-series) (registry code 52035, turbo-fan) (OpenAirDocs)
- Category: Airplane
- Serial number: 45903
- Airframe hours: 53209
- Engines: P&W JT3D-7 1800 lbs thrust turbo fan
- Damage: Substantial damage
- Flight: Part 121
- Operator: Rosenbalm Aviation
- Registered owner: Emery Aircraft Leasing
- Airworthiness certificate: Standard, Transport
- Last inspection: Continuous airworthiness, July 1, 1989, 49 hours before
- Departed: CLT, CHARLOTTE, NC
- Destination: DAY
- Flight plan: IFR
- Airport: DAY, Dayton Cox

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 40; airline transport; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 1, valid medical--w/ waivers/lim; seat: left; toxicology performed; flight hours: 11,620 total, 500 in this make and model, 8,955 as pilot in command, 238 in the last 90 days, 74 in the last 30 days, 4 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Night/dark
- Wind: 40° at 4 knots
- Visibility: 7 statute miles
- Lowest ceiling: 5,500 ft broken
- Temperature: 72 °F, dew point 61 °F
- Altimeter: 29.00 inHg
- Observed at: DAY

## 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 19890713022169A](https://openairdocs.org/incident/19890713022169A), Jul 13, 1989: Doug DC863F, Dayton, OH, Substantial damage. Lost hydraulic pressure taxiing to gate. Auxiliary braking failed. Hit parked aircraft.

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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