NTSB CAROL · Event
Event WPR14CA063
Registry · N3981C
FAA Aircraft Registry record.
Make / Model
BURKHART GROB G 103 TWIN II
Year of manufacture
1983 · 30 years old at event
Engine
NONE NONE
Seats / Engines
2 seats · 1 engine
Last airworthiness date
19830725
ADS-B equipped
Yes — Mode-S A4A2FF
Registrant of record
NORTHERN CALIFORNIA SOARING ASSOCIATION
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Probable cause & findings
The pilot's failure to maintain adequate wing clearance from a runway sign while taxiing.
Factual narrative
The student pilot reported that during landing the glider touched down slightly left of the runway centerline. He engaged the brakes and steered the glider towards the right side of the runway to prepare for a turn. When he approached the taxiway entrance, he released the brakes and started to turn to the left. During the turn the left wing struck a runway sign; the airplane made a sharp left turn, exited the runway surface and came to rest on the grass. During the accident sequence, the left wing sustained substantial damage. The pilot reported no mechanical malfunctions or failures with the airframe that would have precluded normal operation. The student pilot reported that during landing the glider touched down slightly left of the runway centerline. He engaged the brakes and steered the glider towards the right side of the runway to prepare for a turn. When he approached the taxiway entrance, he released the brakes and started to turn to the left. During the turn the left wing struck a runway sign; the airplane made a sharp left turn, exited the runway surface and came to rest on the grass. During the accident sequence, the left wing sustained substantial damage. The pilot reported no mechanical malfunctions or failures with the airframe that would have precluded normal operation. Source: NTSB Aviation Accident Database Retrieved: 2026-02-12
NTSB Findings
Hierarchical cause / factor breakdown from the FAA bulk avdata database. Each finding tagged C (Cause) or F (Factor).
- C Personnel issues-Psychological-Attention/monitoring-Monitoring environment-Student/instructed pilot - C
- C Aircraft-Aircraft oper/perf/capability-Performance/control parameters-(general)-Not attained/maintained - C
- — Environmental issues-Physical environment-Object/animal/substance-Sign/marker-Contributed to outcome
Verbatim from NTSB's published report. Source file
NTSB_2013_WPR14CA063.txt.
Findings + structured fields enriched from FAA avall.mdb.
Full investigation docket on
data.ntsb.gov ↗.
Beyond the agency record
Search this event elsewhere.
Pre-filled searches into the sources where news + community discussion of aviation events lives. External sources are reported, not agency. Treat them as signal that something happened, not as fact about what happened.
Entity-clustered aviation events in the press — last 24 hr + 30-day archive.
Official agency record + docket.
Investigative docket: factual reports, photos, transcripts.
Long-running aviation incident database (Flight Safety Foundation).
Community NTSB synthesis blog — often has photos and witness reports.
Gold-standard aviation incident blog.
Aviation industry news search.
GA pilot forum — informed but rumor-prone.
GA pilot subreddit search.
Tail-number page — flight history (free tier limited).
AOPA Air Safety Institute search.
Mainstream press coverage. Recent events only.
Privacy-preserving news search.
External links open in a new tab. We don't ingest their content; we deep-link search queries.