19960505021829I

Incident · Minor damage

FAA incident report · Grumav G-21A · Anchorage, AK · May 5, 1996

Date: May 5, 1996 · 16:05 local
Place: Anchorage, AK
Airport: Anchorage International
Phase of flight: Roll-Out (Fixed Wing)
Operating rules: General operating rules (Part 91)
Damage: Minor damage
Aircraft: N703
Reported as: Grumav G21A
People aboard: 5
Fatal injuries: 0
Pilot’s flight hours: 2,250 total50 in this make and model60 in the last 90 days

N703Registered now · Grumman G-21AS/N B-81 · Built 1946 Airframe modelGrumman G-21A Engine modelPratt & Whitney R-985 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.

Narrative: after landing, during rollout, left main gear failed and folded. A/c slid 675 feet on rwy centerline. Minor damage to the bottom of a/x and left wing float. Investigation shows that the G21A landing gear bolts in question, p/n 12646 are special bolts, and are designed to shear. These three bolts are designed to shear under excessive loads as per Grumman maintenance manual during beeching operations, possible sideloads during wheel landings. After inspection of aircraft all six bolts, p/n 12646, have been replaced. Both l/m & r/m landing gear are now serviceable. This investigation is closed.

As the FAA filed it

NARRATIVE: AFTER LANDING, DURING ROLLOUT, LEFT MAIN GEAR FAILED AND FOLDED. A/C SLID 675 FEET ON RWY CENTERLINE. MINOR DAMAGE TO THE BOTTOM OF A/X AND LEFT WING FLOAT. INVESTIGATION SHOWS THAT THE G21A LANDING GEAR BOLTS IN QUESTION, P/N 12646 ARE SPECIAL BOLTS, AND ARE DESIGNED TO SHEAR. THESE THREE BOLTS ARE DESIGNED TO SHEAR UNDER EXCESSIVE LOADS AS PER GRUMMAN MAINTENANCE MANUAL DURING BEECHING OPERATIONS, POSSIBLE SIDELOADS DURING WHEEL LANDINGS. AFTER INSPECTION OF AIRCRAFT ALL SIX BOLTS, P/N 12646, HAVE BEEN REPLACED. BOTH L/M & R/M LANDING GEAR ARE NOW SERVICEABLE. THIS INVESTIGATION IS CLOSED.