20000402002129I

Incident · Minor damage

FAA incident report · Boeing 727224 · Yap-Caroline Is, FM · April 2, 2000

Date
April 2, 2000 · 09:56 local
Place
Yap-Caroline Is, FM
Airport
Yap I International
Phase of flight
Roll-Out (Fixed Wing)
Operating rules
Air carrier (Part 121)
Operator
MZZA
Damage
Minor damage
Aircraft
N79743
NTSB investigation
NTSBDCA00WA035
Reported as
Boeing 727224
Pilot’s flight hours
11,476 total5,976 in this make and model58 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.

(-23) Continental micronesia flight 915 departed guam. The flight proceeded normally until the landing roll in yap. At approximately 70 knots at the initiation of braking, the left main landing gear collapsed causing the left wing to contact the runway on the flaps and slats. The aircraft veered left and came to rest 5,000 feet from the approach end of runway 7,30 degrees left of runway heading with both main gear off of the runway. There was no fire. An orderly exit of the passengers and crew was accomplished utilizing the left forward door and emergency exit slide. The left forward drag strut assembly failed at the upper data plate clamp (approximately 21 inches above the lower attach point). On-scene observations led to the tentative conclusion that the failure sequence was: 1. Forward drag brace fractured (initiating event). 2. Forward trunnion pulled aft out of its bearing as the gear folded aft. 3. Aft trunnion pulled out of its bearing. Gear doors and other struts/braces failed. 4. Left outboard tire failed (cut) as a consequence of the gear collapse.

As the FAA filed it

(-23) CONTINENTAL MICRONESIA FLIGHT 915 DEPARTED GUAM. THE FLIGHT PROCEEDED NORMALLY UNTIL THE LANDING ROLL IN YAP. AT APPROXIMATELY 70 KNOTS AT THE INITIATION OF BRAKING, THE LEFT MAIN LANDING GEAR COLLAPSED CAUSING THE LEFT WING TO CONTACT THE RUNWAY ON THE FLAPS AND SLATS. THE AIRCRAFT VEERED LEFT AND CAME TO REST 5,000 FEET FROM THE APPROACH END OF RUNWAY 7,30 DEGREES LEFT OF RUNWAY HEADING WITH BOTH MAIN GEAR OFF OF THE RUNWAY. THERE WAS NO FIRE. AN ORDERLY EXIT OF THE PASSENGERS AND CREW WAS ACCOMPLISHED UTILIZING THE LEFT FORWARD DOOR AND EMERGENCY EXIT SLIDE. THE LEFT FORWARD DRAG STRUT ASSEMBLY FAILED AT THE UPPER DATA PLATE CLAMP (APPROXIMATELY 21 INCHES ABOVE THE LOWER ATTACH POINT). ON-SCENE OBSERVATIONS LED TO THE TENTATIVE CONCLUSION THAT THE FAILURE SEQUENCE WAS: 1. FORWARD DRAG BRACE FRACTURED (INITIATING EVENT). 2. FORWARD TRUNNION PULLED AFT OUT OF ITS BEARING AS THE GEAR FOLDED AFT. 3. AFT TRUNNION PULLED OUT OF ITS BEARING. GEAR DOORS AND OTHER STRUTS/BRACES FAILED. 4. LEFT OUTBOARD TIRE FAILED (CUT) AS A CONSEQUENCE OF THE GEAR COLLAPSE.

NTSB investigation

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