20100824044089A

Accident · Substantial damage

FAA accident report · Grob-Werke G 120A · Buckeye, AZ · August 24, 2010

Date
August 24, 2010 · 14:00 local
Place
Buckeye, AZ
Airport
Buckeye Municipal
Phase of flight
Landing: Touchdown
Operating rules
General operating rules (Part 91)
Operator
VJ3S
Damage
Substantial damage
Aircraft
N865AF
NTSB investigation
NTSBWPR10LA426
Reported as
Grob-Werke G 120A
Reported engine
Lycoming AEIO-540 series
People aboard
1
Fatal injuries
0
Other injuries
0
Pilot’s certificate
Student
Pilot’s flight hours
20 total20 in this make and model20 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.

Student on first solo flight making first solo landing initially landed on all three gears but the aircraft bounced up off the runway. The aircraft contacted the runway the second time nose wheel first and bounced up again at a high angle of attack. The student pilot stated that he did not think the aircraft had the energy to go around at that point and that he pushed forward on the pitch control nosing the aircraft over. The final contact with the runway was nose gear first and the propeller strike marks on the ground indicated propeller contact just prior to nose wheel contact, estimated to be at least 25 degrees nose down. The student pilot and his instructor witnessing that accident from the ground state that the aircraft nosed over from a high of at least 5 feet above the runway. On this contact, the carbon fiber nose wheel yoke sheared at its upper mounting base and folded back approximately 120 degrees until the nose tire pressed against the nose strut. The contact with the ground was now the front lower most portion of the bottom of the nose strut assembly. It gouged the runway and then scraped the runway with the bound nose tire skidding over this scraping. Diagonal propeller strikes leaving one-inch wide marks continued until the aircraft stopped with the angle of the diagonal decreasing as the aircraft slowed. The force of the impact after the nose wheel yoke failed was up the nose landing gear actuator, which mounts, in the upper aft portion of the nose wheel box section causing it to become completely disbonded from the firewall and the fuselage. This then pushed back and up into the airframe disbanding the pedal frames, cracking the first cross-member frame, damaging the beam below the instrument panel and the middle console.

As the FAA filed it

STUDENT ON FIRST SOLO FLIGHT MAKING FIRST SOLO LANDING INITIALLY LANDED ON ALL THREE GEARS BUT THE AIRCRAFT BOUNCED UP OFF THE RUNWAY. THE AIRCRAFT CONTACTED THE RUNWAY THE SECOND TIME NOSE WHEEL FIRST AND BOUNCED UP AGAIN AT A HIGH ANGLE OF ATTACK. THE STUDENT PILOT STATED THAT HE DID NOT THINK THE AIRCRAFT HAD THE ENERGY TO GO AROUND AT THAT POINT AND THAT HE PUSHED FORWARD ON THE PITCH CONTROL NOSING THE AIRCRAFT OVER. THE FINAL CONTACT WITH THE RUNWAY WAS NOSE GEAR FIRST AND THE PROPELLER STRIKE MARKS ON THE GROUND INDICATED PROPELLER CONTACT JUST PRIOR TO NOSE WHEEL CONTACT, ESTIMATED TO BE AT LEAST 25 DEGREES NOSE DOWN. THE STUDENT PILOT AND HIS INSTRUCTOR WITNESSING THAT ACCIDENT FROM THE GROUND STATE THAT THE AIRCRAFT NOSED OVER FROM A HIGH OF AT LEAST 5 FEET ABOVE THE RUNWAY. ON THIS CONTACT, THE CARBON FIBER NOSE WHEEL YOKE SHEARED AT ITS UPPER MOUNTING BASE AND FOLDED BACK APPROXIMATELY 120 DEGREES UNTIL THE NOSE TIRE PRESSED AGAINST THE NOSE STRUT. THE CONTACT WITH THE GROUND WAS NOW THE FRONT LOWER MOST PORTION OF THE BOTTOM OF THE NOSE STRUT ASSEMBLY. IT GOUGED THE RUNWAY AND THEN SCRAPED THE RUNWAY WITH THE BOUND NOSE TIRE SKIDDING OVER THIS SCRAPING. DIAGONAL PROPELLER STRIKES LEAVING ONE-INCH WIDE MARKS CONTINUED UNTIL THE AIRCRAFT STOPPED WITH THE ANGLE OF THE DIAGONAL DECREASING AS THE AIRCRAFT SLOWED. THE FORCE OF THE IMPACT AFTER THE NOSE WHEEL YOKE FAILED WAS UP THE NOSE LANDING GEAR ACTUATOR, WHICH MOUNTS, IN THE UPPER AFT PORTION OF THE NOSE WHEEL BOX SECTION CAUSING IT TO BECOME COMPLETELY DISBONDED FROM THE FIREWALL AND THE FUSELAGE. THIS THEN PUSHED BACK AND UP INTO THE AIRFRAME DISBANDING THE PEDAL FRAMES, CRACKING THE FIRST CROSS-MEMBER FRAME, DAMAGING THE BEAM BELOW THE INSTRUMENT PANEL AND THE MIDDLE CONSOLE.

NTSB investigation

The NTSB’s investigation of this event, with its probable cause and findings. Matched to this report by N-number and date.

Other reports on N865AF · 1

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