Narrative:
As the DC-8 crew began the after landing check, a decrease in quantity of hydraulic pressure was noted. The captain elected to leave the flaps extended, though the spoilers were retracted. Hydraulic pressure remained normal and the crew continued to the ramp. While taxiing, the quantity suddenly went to zero; the nosewheel steering and normal brakes became inoperative. Attempts to stop by using emergency pneumatic braking were unsuccessful. The captain tried to reverse thrust from no. 2 and no. 3 engines, but they would not reverse (no. 1 and 4 engines were shut down). The aircraft was on a slope; it subsequently rolled into a Boeing 727. An examination revealed the bogie trim cylinder on the left main landing gear had ruptured. The air bottle for pneumatic braking was charged to operating pressure, but movement of the airbrake lever would not operate the control valve; though no anomalies were found in rigging/alignment.
PROBABLE CAUSE: "Failure of the left main landing gear, bogie trim cylinder, and malfunction of the emergency airbrake control valve."
Damaged on the ground
accident date: 13-07-1989
type: McDonnell Douglas DC-8-63F
registration: N950R
accident date: 13-07-1989
type: McDonnell Douglas DC-8-63F
registration: N950R
accident date: 13-07-1989
type: McDonnell Douglas DC-8-63F
registration: N950R
| Status: | Accident investigation report completed and information captured |
| Date: | Thursday 13 July 1989 |
| Time: | 01:13 |
| Type: |  McDonnell Douglas DC-8-63F |
| Operating for: | Emery Worldwide |
| Leased from: | Rosenbalm Aviation |
| Registration: | N950R |
| MSN: | 45903/286 |
| First flight: | 1967-04-10 (22 years 3 months) |
| Total airframe hrs: | 53209 |
| Crew: | Fatalities: 0 / Occupants: 3 |
| Passengers: | Fatalities: 0 / Occupants: 0 |
| Total: | Fatalities: 0 / Occupants: 3 |
| Aircraft damage: | Substantial |
| Aircraft fate: | Repaired |
| Location: | Dayton-James Cox Dayton International Airport, OH (DAY) ( United States of America)
|
| Phase: | Taxi (TXI) |
| Nature: | Cargo |
| Departure airport: | Charlotte-Douglas Airport, NC (CLT/KCLT), United States of America |
| Dayton-James Cox Dayton International Airport, OH (DAY/KDAY), United States of America |
As the DC-8 crew began the after landing check, a decrease in quantity of hydraulic pressure was noted. The captain elected to leave the flaps extended, though the spoilers were retracted. Hydraulic pressure remained normal and the crew continued to the ramp. While taxiing, the quantity suddenly went to zero; the nosewheel steering and normal brakes became inoperative. Attempts to stop by using emergency pneumatic braking were unsuccessful. The captain tried to reverse thrust from no. 2 and no. 3 engines, but they would not reverse (no. 1 and 4 engines were shut down). The aircraft was on a slope; it subsequently rolled into a Boeing 727. An examination revealed the bogie trim cylinder on the left main landing gear had ruptured. The air bottle for pneumatic braking was charged to operating pressure, but movement of the airbrake lever would not operate the control valve; though no anomalies were found in rigging/alignment.
Probable Cause:
PROBABLE CAUSE: "Failure of the left main landing gear, bogie trim cylinder, and malfunction of the emergency airbrake control valve."
Accident investigation:
 |
|
Classification:
Hydraulic system problemDamaged on the ground
Sources:
» NTSBPhotos
accident date: 13-07-1989
type: McDonnell Douglas DC-8-63F
registration: N950R
accident date: 13-07-1989
type: McDonnell Douglas DC-8-63F
registration: N950R
accident date: 13-07-1989
type: McDonnell Douglas DC-8-63F
registration: N950R
Map
This map shows the airport of departure and the intended destination of the flight. The line between the airports does not display the exact flight path.
Distance from Charlotte-Douglas Airport, NC to Dayton-James Cox Dayton International Airport, OH as the crow flies is 592 km (370 miles).
Distance from Charlotte-Douglas Airport, NC to Dayton-James Cox Dayton International Airport, OH as the crow flies is 592 km (370 miles).
This information is not presented as the Flight Safety Foundation or the Aviation Safety Network’s opinion as to the cause of the accident. It is preliminary and is based on the facts as they are known at this time.
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