20040702012529A

Accident · Substantial damage

FAA accident report · Cessna 421B · Portland, ME · July 2, 2004

Date
July 2, 2004 · 19:36 local
Place
Portland, ME
Airport
Portland International Jetport
Phase of flight
Roll-Out (Fixed Wing)
Operating rules
General operating rules (Part 91)
Damage
Substantial damage
Aircraft
N421KS
NTSB investigation
NTSBIAD04LA029
Reported as
Cessna 421B
People aboard
2
Fatal injuries
0

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) Pilot stated that he was cleared for harbor visual approach to runway 29 at pwm. Pilot stated he had normal approach and touchdown with full flaps, three gear down with green lights. Pilot stated that as the nosewheel touched down at approximately 70 knots, he heard a "click" on the right side of the aircraft. Pilot then felt the right side of the aircraft settle. Pilot applied left brake and rudder as well as left aileron. Pilot stated he knew gear was collapsing as aircraft departed the right edge of the runway with right main gear collapsed. No injuries. Post event investigation indicated that the wing flaps had received no damage, yet the underside of fuselage suffered broken antennas and skin damage. Right wingtip also suffered extensive damage. It was determined that wing flaps had been retracted by the time the right main gear collapsed and underside of aircraft came in contact with runway/grass. Information made available to investigator also indicated that aircraft had been parked on ramp at groton, CT (gon) the night before. During severe/violent thunderstorm the aircraft was actually moved several yards by the wind. Aircraft may have suffered undetected damage to landing gear during the unattended event on the ramp at groton. No mechanical inspection of the landing gear had been performed prior to departure from groton.

As the FAA filed it

(-23) PILOT STATED THAT HE WAS CLEARED FOR HARBOR VISUAL APPROACH TO RUNWAY 29 AT PWM. PILOT STATED HE HAD NORMAL APPROACH AND TOUCHDOWN WITH FULL FLAPS, THREE GEAR DOWN WITH GREEN LIGHTS. PILOT STATED THAT AS THE NOSEWHEEL TOUCHED DOWN AT APPROXIMATELY 70 KNOTS, HE HEARD A "CLICK" ON THE RIGHT SIDE OF THE AIRCRAFT. PILOT THEN FELT THE RIGHT SIDE OF THE AIRCRAFT SETTLE. PILOT APPLIED LEFT BRAKE AND RUDDER AS WELL AS LEFT AILERON. PILOT STATED HE KNEW GEAR WAS COLLAPSING AS AIRCRAFT DEPARTED THE RIGHT EDGE OF THE RUNWAY WITH RIGHT MAIN GEAR COLLAPSED. NO INJURIES. POST EVENT INVESTIGATION INDICATED THAT THE WING FLAPS HAD RECEIVED NO DAMAGE, YET THE UNDERSIDE OF FUSELAGE SUFFERED BROKEN ANTENNAS AND SKIN DAMAGE. RIGHT WINGTIP ALSO SUFFERED EXTENSIVE DAMAGE. IT WAS DETERMINED THAT WING FLAPS HAD BEEN RETRACTED BY THE TIME THE RIGHT MAIN GEAR COLLAPSED AND UNDERSIDE OF AIRCRAFT CAME IN CONTACT WITH RUNWAY/GRASS. INFORMATION MADE AVAILABLE TO INVESTIGATOR ALSO INDICATED THAT AIRCRAFT HAD BEEN PARKED ON RAMP AT GROTON, CT (GON) THE NIGHT BEFORE. DURING SEVERE/VIOLENT THUNDERSTORM THE AIRCRAFT WAS ACTUALLY MOVED SEVERAL YARDS BY THE WIND. AIRCRAFT MAY HAVE SUFFERED UNDETECTED DAMAGE TO LANDING GEAR DURING THE UNATTENDED EVENT ON THE RAMP AT GROTON. NO MECHANICAL INSPECTION OF THE LANDING GEAR HAD BEEN PERFORMED PRIOR TO DEPARTURE FROM GROTON.

NTSB investigation

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