OpenAirDocs.org

19970108005339I

Incident · Minor damage
Open the Markdown

FAA incident report · AMD FALCON20C5 · El Paso, TX · January 8, 1997

FAA Aviation Safety Information Portal

© OpenStreetMap
Date
January 8, 1997 · 11:20 local
Place
El Paso, TX
Airport
El Paso International
Phase of flight
Level Off Touchdown
Operating rules
Air taxi and commuter (Part 135)
Operator
DKAA
Damage
Minor damage
Aircraft
N980R
Reported as
AMD FALCON20C5
Reported engine
GE CF700*
People aboard
2
Fatal injuries
0
Pilot’s flight hours
8,800 total5,000 in this make and model200 in the last 90 days

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.

Narrative: on January 8, 1997, an incident occurred at the El Paso, Texas international airport when N980R, a falcon Amd-F20, departed the left side of runway 26L after the left main landing gear failed to extend. Follow-on investigation found the left main gear door, forward uplock failed to release during normal and emergency extension attempts. Further investigation found several probable causes for the malfunction: 1. The main landing gear actuator sequence switch, p/n 14 G-1, failed in the closed position allowing the main landing gear (MLG) to unlock prior to the main landing gear door unlocking. 2. The main gear door uplock, p/n vts 442V, interconnected to the main landing gear uplock via push/pull linkage. The door uplock has a shaft (pin, safety lock), p/n MY20248-001, that was distorted and would not operate over its intended range of motion. The shaft distortion may have occurred when the MLG contacted the gear door. Due to the distortion and a failed safety switch, the left main landing gear unlocked prior to the gear door, allowing the main landing to rest on the gear door. The added weight of the landing gear door would not allow the emergency extension

As the FAA filed it

NARRATIVE: ON JANUARY 8, 1997, AN INCIDENT OCCURRED AT THE EL PASO, TEXAS INTERNATIONAL AIRPORT WHEN N980R, A FALCON AMD-F20, DEPARTED THE LEFT SIDE OF RUNWAY 26L AFTER THE LEFT MAIN LANDING GEAR FAILED TO EXTEND. FOLLOW-ON INVESTIGATION FOUND THE LEFT MAIN GEAR DOOR, FORWARD UPLOCK FAILED TO RELEASE DURING NORMAL AND EMERGENCY EXTENSION ATTEMPTS. FURTHER INVESTIGATION FOUND SEVERAL PROBABLE CAUSES FOR THE MALFUNCTION: 1. THE MAIN LANDING GEAR ACTUATOR SEQUENCE SWITCH, P/N 14 G-1, FAILED IN THE CLOSED POSITION ALLOWING THE MAIN LANDING GEAR (MLG) TO UNLOCK PRIOR TO THE MAIN LANDING GEAR DOOR UNLOCKING. 2. THE MAIN GEAR DOOR UPLOCK, P/N VTS 442V, INTERCONNECTED TO THE MAIN LANDING GEAR UPLOCK VIA PUSH/PULL LINKAGE. THE DOOR UPLOCK HAS A SHAFT (PIN, SAFETY LOCK), P/N MY20248-001, THAT WAS DISTORTED AND WOULD NOT OPERATE OVER ITS INTENDED RANGE OF MOTION. THE SHAFT DISTORTION MAY HAVE OCCURRED WHEN THE MLG CONTACTED THE GEAR DOOR. DUE TO THE DISTORTION AND A FAILED SAFETY SWITCH, THE LEFT MAIN LANDING GEAR UNLOCKED PRIOR TO THE GEAR DOOR, ALLOWING THE MAIN LANDING TO REST ON THE GEAR DOOR. THE ADDED WEIGHT OF THE LANDING GEAR DOOR WOULD NOT ALLOW THE EMERGENCY EXTENSION