NTSB CAROL · Event
Event ATL87IA067
Registry · N429BG
FAA Aircraft Registry record.
Make / Model
BURKHART GROB FLUGZEUGBAU G103 TWIN ASTIR
Year of manufacture
1982 · 5 years old at event
Engine
NONE NONE
Seats / Engines
2 seats · 1 engine
Last airworthiness date
19821213
ADS-B equipped
Yes — Mode-S A51D2E
Registrant of record
CHERRYHILL FLYING CLUB LLC
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Factual narrative
AS THE GLIDER PLT WAS APCHG THE ENTRY POINT FOR LANDING, HE CHECKED THE SPOILERS FOR OPERATION. THE SPOILERS EXTENDED, BUT WOULD NOT RETRACT. THERE WAS A SIGNIFICANT INCREASE IN THE SINK RATE & THE PLT REALIZED HE WOULD BE UNABLE TO REACH THE ARPT. SUBSEQUENTLY, HE LANDED THE GLIDER (SAILPLANE) APRX 1/4 MI NORTH OF THE ARPT. AN INVESTIGATION REVEALED THAT ABELLCRANK (PN 103B-4433) IN THE SPOILER CONTROL SYSTEM HAD FAILED AT TWO LOCATIONS ON THE CENTER BEARING HOUSING. A METALLURGICAL EXAM REVEALED THE BELLCRANK HAD FAILED FROM HIGH CYCLE, LOW STRESS FATIGUE. THE FAILURES OCCURRED AT THE EDGE OF FILLET-WELDS IN RELATIVELY SOFT, HEAT AFFECTED ZONES (HAZ). THE BELLCRANK HAD NOT BEEN SUBJECTED TO POST WELD HEAT TREATMENT. TESTS VERIFIED A SIGNIFICANT LOSS OF HARDNESS IN THE HAZ. THE GLIDER HAD A TOTAL FLT TIME OF 318 HRS WHEN THE BELLCRANK FAILED. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_1987_ATL87IA067.txt.
Findings + structured fields enriched from FAA avall.mdb.
Full investigation docket on
data.ntsb.gov ↗.
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