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19960102000139I

Incident · Minor damage
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FAA incident report · Lear 24 · Dayton, OH · January 2, 1996

FAA Aviation Safety Information Portal

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Date
January 2, 1996 · 16:37 local
Place
Dayton, OH
Airport
James M Cox Dayton International
Phase of flight
Takeoff Ground Roll
Operating rules
General operating rules (Part 91)
Damage
Minor damage
Aircraft
N710TV
Reported as
Lear 24
Reported engine
GE CJ6104
People aboard
2
Fatal injuries
0
Pilot’s flight hours
16,000 total1,600 in this make and model200 in the last 90 days
N710TVRegistration cancelled Jan 23, 2018 · Learjet 24S/N 159 · Built 1968Airframe modelLearjet 24Engine modelGE CJ610-SER seriesTurbo-jet

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: the aircraft departed runway 36 at Dayton on a non-revenue flight to the home base at mwo. On take off, at rotation, both left main gear wheels and strut departed the aircraft. This was observed by personnel on the ground and relayed to the PIC of N710TV. He acknowledged that there was a problem with the gear indication system on retraction. Fuel was burned off and the PIC elected to load at ffo (w.p.a.f.b.). A gear up landing was made on runway 5, which was covered with snow. The aircraft sustained minimal damage. According to the p.I.c., just prior to lift off at day, he felt severe roughness in the gear and thought he encountered ice ridges on the runway. The investigation disclosed that the snap ring groove on the lower gear strut had failed, which allowed the strut oleo and wheels to drop down, shearing the gear scissors and fracturing the brake lines. At the time of occurrence, there was snow and ice on the runway. There was indication that the right main gear had also been subjected to severe roughness and pounding. Runways were being plowed, some areas contained ice and ridges of ice which caused extreme roughness. A larger aircraft with larger wheels would not have incurred the same type of damage.

As the FAA filed it

NARRATIVE: THE AIRCRAFT DEPARTED RUNWAY 36 AT DAYTON ON A NON-REVENUE FLIGHT TO THE HOME BASE AT MWO. ON TAKE OFF, AT ROTATION, BOTH LEFT MAIN GEAR WHEELS AND STRUT DEPARTED THE AIRCRAFT. THIS WAS OBSERVED BY PERSONNEL ON THE GROUND AND RELAYED TO THE PIC OF N710TV. HE ACKNOWLEDGED THAT THERE WAS A PROBLEM WITH THE GEAR INDICATION SYSTEM ON RETRACTION. FUEL WAS BURNED OFF AND THE PIC ELECTED TO LOAD AT FFO (W.P.A.F.B.). A GEAR UP LANDING WAS MADE ON RUNWAY 5, WHICH WAS COVERED WITH SNOW. THE AIRCRAFT SUSTAINED MINIMAL DAMAGE. ACCORDING TO THE P.I.C., JUST PRIOR TO LIFT OFF AT DAY, HE FELT SEVERE ROUGHNESS IN THE GEAR AND THOUGHT HE ENCOUNTERED ICE RIDGES ON THE RUNWAY. THE INVESTIGATION DISCLOSED THAT THE SNAP RING GROOVE ON THE LOWER GEAR STRUT HAD FAILED, WHICH ALLOWED THE STRUT OLEO AND WHEELS TO DROP DOWN, SHEARING THE GEAR SCISSORS AND FRACTURING THE BRAKE LINES. AT THE TIME OF OCCURRENCE, THERE WAS SNOW AND ICE ON THE RUNWAY. THERE WAS INDICATION THAT THE RIGHT MAIN GEAR HAD ALSO BEEN SUBJECTED TO SEVERE ROUGHNESS AND POUNDING. RUNWAYS WERE BEING PLOWED, SOME AREAS CONTAINED ICE AND RIDGES OF ICE WHICH CAUSED EXTREME ROUGHNESS. A LARGER AIRCRAFT WITH LARGER WHEELS WOULD NOT HAVE INCURRED THE SAME TYPE OF DAMAGE.