20061016023149I

Incident · Minor damage

FAA incident report · Piper PA-31-350 · Colorado Spring, CO · October 16, 2006

Date
October 16, 2006 · 19:32 local
Place
Colorado Spring, CO
Airport
City Of Colorado Springs Municipal
Phase of flight
Roll-Out (Fixed Wing)
Operating rules
Air taxi and commuter (Part 135)
Operator
KY7A
Damage
Minor damage
Aircraft
N66906
Reported as
Piper PA31350
Reported engine
Lycoming TIO540*
People aboard
1
Fatal injuries
0
Pilot’s flight hours
1,613 total53 in this make and model53 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.

(-23) After touchdown on runway 35L at kcos, aircraft began to pull to the left. Pilot noticed left wing lowering and sparks coming from under the left wing. Pilot informed tower of a left main gear collapse and continued onto the A3 taxiway connector where the aircraft came to a stop between the physical runway and the hold-short line of the A3 connector. Pilot then shut down the aircraft. Subsequent investigation revealed left main landing gear trunnion bolt broke in two pieces causing the left main gear to twist outboard and partially collapse. Inspection of trunnion bolt by NTSB personnel indicated metal fatigue caused the trunnion bolt to fail. Operator is replacing the trunnion bolts on all of their Piper navajo aircraft during the next 100 hour insp.

As the FAA filed it

(-23) AFTER TOUCHDOWN ON RUNWAY 35L AT KCOS, AIRCRAFT BEGAN TO PULL TO THE LEFT. PILOT NOTICED LEFT WING LOWERING AND SPARKS COMING FROM UNDER THE LEFT WING. PILOT INFORMED TOWER OF A LEFT MAIN GEAR COLLAPSE AND CONTINUED ONTO THE A3 TAXIWAY CONNECTOR WHERE THE AIRCRAFT CAME TO A STOP BETWEEN THE PHYSICAL RUNWAY AND THE HOLD-SHORT LINE OF THE A3 CONNECTOR. PILOT THEN SHUT DOWN THE AIRCRAFT. SUBSEQUENT INVESTIGATION REVEALED LEFT MAIN LANDING GEAR TRUNNION BOLT BROKE IN TWO PIECES CAUSING THE LEFT MAIN GEAR TO TWIST OUTBOARD AND PARTIALLY COLLAPSE. INSPECTION OF TRUNNION BOLT BY NTSB PERSONNEL INDICATED METAL FATIGUE CAUSED THE TRUNNION BOLT TO FAIL. OPERATOR IS REPLACING THE TRUNNION BOLTS ON ALL OF THEIR PIPER NAVAJO AIRCRAFT DURING THE NEXT 100 HOUR INSP.

Other reports on N66906 · 4

Matched to the same aircraft by N-number and date.