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20001212026559I

Incident
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FAA incident report · Boeing 757222 · Omaha, NE · December 12, 2000

FAA Aviation Safety Information Portal

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Date
December 12, 2000 · 16:30 local
Place
Omaha, NE
Airport
Eppley Airfield
Phase of flight
Final Approach
Operating rules
Air carrier (Part 121)
Operator
UALA
Aircraft
N511UA
Reported as
Boeing 757222

From the FAA’s Accident/Incident Data System (AIDS), through its Aviation Safety Information Portal, as reported. The NTSB investigates accidents separately, and its record of an accident is the fuller one. The aircraft is matched to the registry by N-number and event date, checked against the reported make and model; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

What happened

The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.

(-23)N511UA operated as uala flight 1580, experienced a NLG unsafe indication while on approach to rwy 14R, oma. The aircrew aborted approach and declared an emergency. Aircrew performed emergency procedures as specified for a nose gear unsafe indication with negative results. Aircrew elected to notify the uala maintenance control center and sfo engineering. After discussion between the parties it was determined to attempt an approach and landing with the nose gear unsafe indication. The landing and rollout were uneventful. Passengers were deplaned on rwy and a/c was towed to a maintenance parking location. Maintenance investigation revealed a broken grease zerk of unknown origin between the nose gear downlock arms. The zerk was removed and the overlocks instantly fell into position. A/c was ferried to the uala maintenance facility in indianapolis, IN., where gear retractions were performed and the nose gear unsafe indication was not duplicated. The a/c was returned to line service. This incident is closed with this report.

As the FAA filed it

(-23)N511UA OPERATED AS UALA FLIGHT 1580, EXPERIENCED A NLG UNSAFE INDICATION WHILE ON APPROACH TO RWY 14R, OMA. THE AIRCREW ABORTED APPROACH AND DECLARED AN EMERGENCY. AIRCREW PERFORMED EMERGENCY PROCEDURES AS SPECIFIED FOR A NOSE GEAR UNSAFE INDICATION WITH NEGATIVE RESULTS. AIRCREW ELECTED TO NOTIFY THE UALA MAINTENANCE CONTROL CENTER AND SFO ENGINEERING. AFTER DISCUSSION BETWEEN THE PARTIES IT WAS DETERMINED TO ATTEMPT AN APPROACH AND LANDING WITH THE NOSE GEAR UNSAFE INDICATION. THE LANDING AND ROLLOUT WERE UNEVENTFUL. PASSENGERS WERE DEPLANED ON RWY AND A/C WAS TOWED TO A MAINTENANCE PARKING LOCATION. MAINTENANCE INVESTIGATION REVEALED A BROKEN GREASE ZERK OF UNKNOWN ORIGIN BETWEEN THE NOSE GEAR DOWNLOCK ARMS. THE ZERK WAS REMOVED AND THE OVERLOCKS INSTANTLY FELL INTO POSITION. A/C WAS FERRIED TO THE UALA MAINTENANCE FACILITY IN INDIANAPOLIS, IN., WHERE GEAR RETRACTIONS WERE PERFORMED AND THE NOSE GEAR UNSAFE INDICATION WAS NOT DUPLICATED. THE A/C WAS RETURNED TO LINE SERVICE. THIS INCIDENT IS CLOSED WITH THIS REPORT.