Boeing 727-214A N752US

Summary

On 9 February 1992 at about 21:10 local time, a Boeing 727-214A registered N752US, operated by Usair, Inc., was involved in an incident near San Juan. 157 people were on board and nobody was injured. The aircraft was slightly damaged. The NTSB has published a probable cause for this accident; it is quoted in full below.

Date

9 February 1992 at 21:10

Classification

Incident

Location

San Juan

Nearest airport

Luis Munoz Marin Int'l (SJU)

Coordinates

Not recorded

Aircraft

Boeing 727-214A

Registration

N752US

Category

Airplane

Engines

3

Operator

Usair, Inc.

Operating rule

Part 121: Air Carrier

Purpose of flight

Unknown

Phase of flight

Not recorded

Route

Unknown → Philadelphia

Aircraft damage

Minor

Weather

VMC

Light

Day

NTSB number

MIA92IA081

Nobody was injured.

THE FLIGHT ENGINEER'S LACK OF TRAINING IN EMERGENCY PROCEDURES AND HIS FAILURE TO FOLLOW PUBLISHED EMERGENCY PROCEDURES, RESULTING IN HIS NOT BEING ABLE TO MANUALLY EXTEND THE RIGHT MAIN LANDING GEAR, FOLLOWING THE LOSS OF THE 'A' HYDRAULIC SYSTEM. CONTRIBUTING TO THE INCIDENT WAS THE CAPTAINS FAILURE TO EXHAUST ALL AVAILABLE RESOURCES AND TIME IN ATTEMPTS TO EXTEND THE RIGHT MAIN LANDING GEAR PRIOR TO LANDING WITH THE GEAR RETRACTED.

Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.

Read the full NTSB narrative

FLT LOST 'A' HYDRAULIC SYSTEM WHEN LEFT MAIN GEAR DOOR UP LINE RUPTURED DURING GEAR RETRACTION AT POINT IT HAD CHAFFED ON APU. CAPT CALLED FOR 30,000 POUNDS OF FUEL TO BE DUMPED FOLLOWED BY MANUAL EXTENSION OF THE LANDING GEAR. FLT ENG COULD NOT GET RT MAIN GEAR TO EXTEND MANUALLY. CAPT TOLD FLT ENG TO VIEW POSITION OF MAIN LANDING GEAR THROUGH VIEW PORTS IN CABIN. FLT ENG COULD NOT LOCATE THE VIEW PORTS AND RETURNED TO COCKPIT. CAPT THEN ORDERED FUEL DUMPED TO MINIMUM LEVEL AFTER WHICH A LANDING WITH RT MAIN GEAR RETRACTED WAS MADE. AFTER LANDING WHEN AIRCRAFT WAS RAISED THE RT MAIN LANDING GEAR WAS FOUND TO BE STOWED ON THE UPLOCK NORMALLY. THE GEAR WAS THEN EXTENDED FOLLOWING NORMAL MANUAL EXTENSION PROCEDURES. NO EVIDENCE OF MALFUNCTION OF THE RT MAIN GEAR WAS FOUND. THE RT MAIN GEAR EXTENDS BY CRANKING OPPOSITE DIRECTION FROM THE LEFT AND NOSE GEAR. THE FLT ENG BECAME QUALIFIED AS FLT ENG ON 11/03/91 AND HAD ACCUMULATED 200 HOURS AS FLT ENG.

Quoted verbatim from the NTSB record.