Narrative:

During landing rollout on runway 7 at yap island, federated state of micronesia, once airspeed decelerated below 80 KIAS, we heard a loud bang and loud pop. The aircraft listed to the left and the aircraft started going off the runway at the 1000 ft remaining marker. Aircraft came to rest with the tail and right wing still on runway. Evacuate/evacuation of all passenger was accomplished through the L1 door, slide was deployed! No injuries! It appears that the front support bar for left gear failed and then caused left gear to move rearward and up into left wing strut area. Left wing leds and flaps totaled, as well as left gear and fairings. To prevent a recurrence, I strongly recommend that an emergency airworthiness directive be issued to all B727 operators worldwide to immediately inspect the forward support bar (brace) of the left and right main gears, by removing the protective sheet metal cover to inspect for cracks. Callback conversation with reporter revealed the following information: aircraft is being repaired so that it can be ferried to taiwan for pertinent repair. Aircraft is scheduled to be returned to line service by the end of may. The air carrier, FAA, boeing, and the NTSB are all involved in the investigation. The flight recorder has confirmed that there was no hard landing and there was no sideload placed on the gear at touchdown. The crew was not faulted in any way. The landing gear has been returned to the air carrier maintenance base for metallurgical analysis. This is not yet completed. The preliminary finding is that the forward trunion support arm fractured. Also, the left gear had been replaced within the past month.

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Original NASA ASRS Text

Title: B727 CREW HAD THE L MAIN GEAR COLLAPSE ON LNDG ROLLOUT.

Narrative: DURING LNDG ROLLOUT ON RWY 7 AT YAP ISLAND, FEDERATED STATE OF MICRONESIA, ONCE AIRSPD DECELERATED BELOW 80 KIAS, WE HEARD A LOUD BANG AND LOUD POP. THE ACFT LISTED TO THE L AND THE ACFT STARTED GOING OFF THE RWY AT THE 1000 FT REMAINING MARKER. ACFT CAME TO REST WITH THE TAIL AND R WING STILL ON RWY. EVAC OF ALL PAX WAS ACCOMPLISHED THROUGH THE L1 DOOR, SLIDE WAS DEPLOYED! NO INJURIES! IT APPEARS THAT THE FRONT SUPPORT BAR FOR L GEAR FAILED AND THEN CAUSED L GEAR TO MOVE REARWARD AND UP INTO L WING STRUT AREA. L WING LEDS AND FLAPS TOTALED, AS WELL AS L GEAR AND FAIRINGS. TO PREVENT A RECURRENCE, I STRONGLY RECOMMEND THAT AN EMER AIRWORTHINESS DIRECTIVE BE ISSUED TO ALL B727 OPERATORS WORLDWIDE TO IMMEDIATELY INSPECT THE FORWARD SUPPORT BAR (BRACE) OF THE L AND R MAIN GEARS, BY REMOVING THE PROTECTIVE SHEET METAL COVER TO INSPECT FOR CRACKS. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: ACFT IS BEING REPAIRED SO THAT IT CAN BE FERRIED TO TAIWAN FOR PERTINENT REPAIR. ACFT IS SCHEDULED TO BE RETURNED TO LINE SVC BY THE END OF MAY. THE ACR, FAA, BOEING, AND THE NTSB ARE ALL INVOLVED IN THE INVESTIGATION. THE FLT RECORDER HAS CONFIRMED THAT THERE WAS NO HARD LNDG AND THERE WAS NO SIDELOAD PLACED ON THE GEAR AT TOUCHDOWN. THE CREW WAS NOT FAULTED IN ANY WAY. THE LNDG GEAR HAS BEEN RETURNED TO THE ACR MAINT BASE FOR METALLURGICAL ANALYSIS. THIS IS NOT YET COMPLETED. THE PRELIMINARY FINDING IS THAT THE FORWARD TRUNION SUPPORT ARM FRACTURED. ALSO, THE L GEAR HAD BEEN REPLACED WITHIN THE PAST MONTH.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.