OpenAirDocs.org

20090826018619I

Incident · Minor damage
Open the Markdown

FAA incident report · Piper PA-34-200T · Goodyear, AZ · August 26, 2009

FAA Aviation Safety Information Portal

© OpenStreetMap
Date
August 26, 2009 · 09:16 local
Place
Goodyear, AZ
Airport
Phoenix Goodyear
Phase of flight
Taxi
Operating rules
Pilot school (Part 141)
Operator
OXZS
Damage
Minor damage
Aircraft
N449S
Reported as
Piper PA34200T
People aboard
3
Fatal injuries
0
Other injuries
0
Pilot’s flight hours
0 total0 in this make and model0 in the last 90 days
N449SRegistration cancelled Mar 7, 2017 · Piper PA-34-200TS/N 34-8070233Airframe modelPiper PA-34-200TEngine modelContinental TSIO-360-EBReciprocating

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.

Aircraft was flying on flight training flight and had just landed on rwy 3 at Goodyear airport. The aircraft landed and rolled out with little braking action being applied. While still rolling the aircraft turned off the runway onto taxiway A5. As it passed the hold short line, brakes were then applied. The nose gear began to slowly collapse. The nose gear then retracted causing the nose to contact the taxiway. The engines were both running at low idle and both props struck the ground. Engine and cockpit power was shut down. All occupants exited the aircraft with no injuries. Subsequent mechanical inspection of the landing gear system found there had been damage sustained previously to the nose gear downlock hardware. This damage allowed the downlock rigging to become out-of-rig. With nose gear downlock rigging off, it allows the nose gear extension fork to overcenter when the brakes were applied. The nose gear hydraulic actuator is rigged to shut off hydraulic pressure to the extended piston once the overcenter downlock is in place. Weight of the aircraft allowed the nose gear to overcome the pressure in the hydraulic piston, thus allowing the gear to retract.

As the FAA filed it

AIRCRAFT WAS FLYING ON FLIGHT TRAINING FLIGHT AND HAD JUST LANDED ON RWY 3 AT GOODYEAR AIRPORT. THE AIRCRAFT LANDED AND ROLLED OUT WITH LITTLE BRAKING ACTION BEING APPLIED. WHILE STILL ROLLING THE AIRCRAFT TURNED OFF THE RUNWAY ONTO TAXIWAY A5. AS IT PASSED THE HOLD SHORT LINE, BRAKES WERE THEN APPLIED. THE NOSE GEAR BEGAN TO SLOWLY COLLAPSE. THE NOSE GEAR THEN RETRACTED CAUSING THE NOSE TO CONTACT THE TAXIWAY. THE ENGINES WERE BOTH RUNNING AT LOW IDLE AND BOTH PROPS STRUCK THE GROUND. ENGINE AND COCKPIT POWER WAS SHUT DOWN. ALL OCCUPANTS EXITED THE AIRCRAFT WITH NO INJURIES. SUBSEQUENT MECHANICAL INSPECTION OF THE LANDING GEAR SYSTEM FOUND THERE HAD BEEN DAMAGE SUSTAINED PREVIOUSLY TO THE NOSE GEAR DOWNLOCK HARDWARE. THIS DAMAGE ALLOWED THE DOWNLOCK RIGGING TO BECOME OUT-OF-RIG. WITH NOSE GEAR DOWNLOCK RIGGING OFF, IT ALLOWS THE NOSE GEAR EXTENSION FORK TO OVERCENTER WHEN THE BRAKES WERE APPLIED. THE NOSE GEAR HYDRAULIC ACTUATOR IS RIGGED TO SHUT OFF HYDRAULIC PRESSURE TO THE EXTENDED PISTON ONCE THE OVERCENTER DOWNLOCK IS IN PLACE. WEIGHT OF THE AIRCRAFT ALLOWED THE NOSE GEAR TO OVERCOME THE PRESSURE IN THE HYDRAULIC PISTON, THUS ALLOWING THE GEAR TO RETRACT.