- Date
- February 9, 1992, 17:10 local (21:10 UTC)
- Place
- San Juan, PR
- Injuries
- 157 uninjured
- Damage
- Minor damage
- Phase of flight
- Initial climb
- Aircraft
- N752USBoeing 727-214A
- Weather
- Visual (VMC) · Day
- Status
- Completed · report June 30, 1993
- Report
- Approved by Office Director
- FAA report
- 19920209002279I
- Case key
- 33007
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the incident.
On this page
Probable cause
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.
Sequence of events
NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.
Analysis
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.
Aircraft
- Registration
- N752US
- Reported as
- Boeing 727-214A
- Category
- Airplane
- Serial number
- 21691
- Airframe hours
- 35,403
- Engine
- P&W JT8D-15A, 15,500 lbs thrust, turbo fan
- Damage
- Minor damage
- Flight
- Part 121
- Operator
- Usair, Inc.
- Registered owner
- Usair
- Airworthiness certificate
- Standard, Transport
- Last inspection
- Continuous airworthiness · October 21, 1991 · 764 hours before
- Destination
- PHL · Philadelphia, PA
- Flight plan
- IFR
- Airport
- SJU · Luis Munoz Marin Int'L, runway 8, 10,002 × 200 ft, asphalt
Flight crew
As NTSB recorded them. NTSB leaves out names.
- Role
- Pilot
- Age
- 54
- Certificate
- Airline transport
- Airplane ratings
- Multi-engine land
- Instrument ratings
- Airplane
- Medical
- Class 1, Valid Medical--w/ waivers/lim
- Seat
- Left
- Flight hours
- 23,154 total · 7,398 in this make and model · 173 in the last 90 days · 51 in the last 30 days · 5 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 70° at 12 knots
- Visibility
- 15 statute miles
- Lowest ceiling
- 7,000 ft broken
- Temperature
- 81 °F, dew point 72 °F
- Altimeter
- 30.00 inHg
- Observed at
- SJU, 1 nm away
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.