Boeing 757-200 incident near Houston, Texas, April 7, 1993
On April 7, 1993 at about 5:55 pm local time, a Boeing 757-200, registered CFOOA, was involved in an incident near Houston, Texas. It was a flight of an unrecorded kind under foreign airline rules (Part 129). No one was hurt; 40 people were on board or involved. The weather was instrument conditions (cloud, fog or low visibility).
The NTSB's probable cause their words, unchanged
ENCOUNTER WITH TURBULENCE. A FACTOR WAS THE LOSS OF ELECTRICAL POWER
Source: NTSB aviation accident database, copy made October 5, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- April 7, 1993 · about 5:55 pm local time
- Place
- Houston, Texas
- Type
- Incident
- Injuries
- No one was hurt; 40 people were on board or involved.
- Weather
- instrument conditions (cloud, fog or low visibility)
- Aircraft
- Boeing 757-200 · all 757-200s on the register
- Registration
- CFOOA · no longer on the register · serial 23767
- Damage
- Not recorded
- Flight
- Flight of an unrecorded kind · foreign airline rules (Part 129)
The NTSB's narrative final · quoted from the NTSB record
THE TRANSPORT AIRPLANE ENCOUNTERED SEVERE TURBULENCE WHILE IN CRUISE AT FL420. THE CREW REACTED TO RAPIDLY DECAYING AIRSPEED BY LOWERING THE NOSE, INDUCING NEGATIVE 'G' FORCES. THE INTEGRATED DRIVE GENERATORS WERE TRIPPED OFF BY THE NEGATIVE 'G' MANEUVER. THE CREW COMPLETED THE EMERGENCY PROCEDURES FOR COMPLETE ELECTRICAL FAILURE WHILE FLYING THE AIRPLANE ON THE STANDBY FLIGHT INSTRUMENTS UNTIL ELECTRICAL POWER WAS REESTABLISHED FROM THE APU, EVENTUALLY REINSTATING BOTH GENERATORS
The complete narrative as the NTSB published it. The NTSB's docket holds the report as a PDF and any photographs, statements and other documents from the investigation.
The factual record from the NTSB's investigation tables, in plain English
Pilot
- Certificate: airline transport pilot
- Ratings: multi-engine land; single-engine land; instrument: airplane
- Flight time: 5,700 hours in all; 2,700 in this make and model; 150 in the last 90 days; 80 in the last 30 days; 2,800 as pilot in command
- Medical certificate: Class 1 (valid medical--no waivers/lim.)
- Seat: left
The aircraft
- Airframe total time: 28,406 hours
- Last inspection: approved inspection programme, March 9, 1993
- Maximum gross weight: 219,951 lb
- Seats: 237
- Landing gear: retractable
- Engine: Rolls-Royce RB211-535E4 (turbofan); 0 hours total
- Operator: Canada 3000 Airline LTD
The flight
- Departed from: YVR Vancouver at 2:04 pm
- Destination: SJO San Jose CA
- Flight plan: IFR
- Runway 0
- A second pilot was aboard
Weather at the time
- Light: daylight
- Wind: from 140° at 7 knots
- Visibility: 2 statute miles
- Sky: overcast at 600 ft; not recorded at 600 ft
- Temperature: 61°F (16°C), dew point 61°F (16°C)
- Observation at 6:02 pm from IAH, 30 miles away
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| Crew | 9 | |||
| Passengers | 31 |
Documents from the investigation the NTSB's docket: the evidence folder behind the report
The docket, the folder of records gathered during an investigation (maintenance records, photographs, witness statements, examinations), has not been read from the NTSB for this case yet; the list appears here once it has. Open the docket at the NTSB.
Everything on this page comes from the NTSB's public records. The narrative, probable cause and findings are the NTSB's own words; the coded tables behind the report are written out in plain English, with pilots' ages, home towns and medical details left out. The documents and photographs are the NTSB's docket, shown as the NTSB released them. This site's own text never names anyone involved. A preliminary report can change; the final report usually follows one to two years later, and the page is refreshed when it does.