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20071121828799A

Accident · Substantial damage
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FAA accident report · Beech 95B55 · Carlsbad, CA · November 21, 2007

FAA Aviation Safety Information Portal

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Date
November 21, 2007 · 16:10 local
Place
Carlsbad, CA
Airport
Mc Clellan-Palomar
Phase of flight
Level Off Touchdown
Operating rules
General operating rules (Part 91)
Damage
Substantial damage
Aircraft
N1831L
NTSB investigation
NTSBSEA08LA040
Reported as
Beech 95B55
People aboard
2
Fatal injuries
0
Pilot’s flight hours
24,044 total83 in this make and model16 in the last 90 days
N1831LRegistration cancelled May 9, 2008 · Beech 95-B55 (T42A)S/N TC-1960 · Built 1976Airframe modelBeech 95-B55 (T42A)Engine modelContinental I0-470 seriesReciprocating

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) The reporting inspector interviewed the pilot on 11/30/07. The pilot stated that there was noticeable vibration in the nosewheel after the first touchdown. The pilot added that he attempted to reduce the vibration on the nosewheel by pulling aft on the yoke. Witness statements describe that the aircraft initially touched down nosewheel first, bounced and became airborne again. The Palomar ATCT report (FAA form 8020-9), the pilot's written statement and several witness statements consistently describe several subsequent touchdown "bounces" that are characteristic of pilot induced oscillations (pio). After approximately the sixth bounce, the nose landing gear collapsed and the nosewheel assembly assembly separated near the lower end of the oleo strut. A post accident visual inspection of the aircraft revealed that the nosewheel trunnion assembly exhibited signs of ductile overload and stress cracking. The aircraft came to rest in a nose low attitude. Both left and right engine's propeller blades were bent aft near the blade tips. The fuselage skin displays signs of deformation and wrinkling aft of the cabin area.

As the FAA filed it

(-23) THE REPORTING INSPECTOR INTERVIEWED THE PILOT ON 11/30/07. THE PILOT STATED THAT THERE WAS NOTICEABLE VIBRATION IN THE NOSEWHEEL AFTER THE FIRST TOUCHDOWN. THE PILOT ADDED THAT HE ATTEMPTED TO REDUCE THE VIBRATION ON THE NOSEWHEEL BY PULLING AFT ON THE YOKE. WITNESS STATEMENTS DESCRIBE THAT THE AIRCRAFT INITIALLY TOUCHED DOWN NOSEWHEEL FIRST, BOUNCED AND BECAME AIRBORNE AGAIN. THE PALOMAR ATCT REPORT (FAA FORM 8020-9), THE PILOT'S WRITTEN STATEMENT AND SEVERAL WITNESS STATEMENTS CONSISTENTLY DESCRIBE SEVERAL SUBSEQUENT TOUCHDOWN "BOUNCES" THAT ARE CHARACTERISTIC OF PILOT INDUCED OSCILLATIONS (PIO). AFTER APPROXIMATELY THE SIXTH BOUNCE, THE NOSE LANDING GEAR COLLAPSED AND THE NOSEWHEEL ASSEMBLY ASSEMBLY SEPARATED NEAR THE LOWER END OF THE OLEO STRUT. A POST ACCIDENT VISUAL INSPECTION OF THE AIRCRAFT REVEALED THAT THE NOSEWHEEL TRUNNION ASSEMBLY EXHIBITED SIGNS OF DUCTILE OVERLOAD AND STRESS CRACKING. THE AIRCRAFT CAME TO REST IN A NOSE LOW ATTITUDE. BOTH LEFT AND RIGHT ENGINE'S PROPELLER BLADES WERE BENT AFT NEAR THE BLADE TIPS. THE FUSELAGE SKIN DISPLAYS SIGNS OF DEFORMATION AND WRINKLING AFT OF THE CABIN AREA.

NTSB investigation

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

NTSB SEA08LA040Accident · No injuriesLimited investigationFinal reportCarlsbad, CAThe pilot's improper flare resulting in a porpoise and hard landing.Nov 22, 2007 · Substantial damage