NTSB CAROL · Event
Event SEA76FYC45
Registry · N9785C
FAA Aircraft Registry record.
Make / Model
HILLER UH-12E
TCDS
4H11 · SIAM HILLER HOLDINGS INC
Engine
LYCOMING VO-540 SERIES (310 hp)
Seats / Engines
4 seats · 1 engine
Last airworthiness date
19631014
ADS-B equipped
Yes — Mode-S ADA467
Registrant of record
SUMMIT HELICOPTERS INC
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Historical record (pre-1982)
NTSB recorded this accident in the pre-1982 coded-field schema — structured fields rather than free-text narrative. Decoded codes use established NTSB single-letter taxonomies; cause factors remain verbatim pending the Form 6120.4 codebook lookup.
Aircraft
HILLER ACFT UH-12E · N9785C
Damage
Destroyed
Craft type
Balloon
Classification
Accident
Light condition
Day
Weather
VMC
Phase of flight
DM
Operator type
Part 135 (air taxi/commuter)
Kind of flying
CA
Weather at impact
Sky
UNKNOWN/NOT REPORTED
Temp
50° F
Aircraft history
Serial number
000000002269
Total time
4,681 hrs
Pilot
Certificate
Flight instructor (CFI)
Total hours
3,454
Age
26
Probable cause (from PRE1982.MDB)
EE,SETTLED,STRUCK T/R,ENTERED SPIN,ROLLED DN HILL.
Investigator remarks
SPRAYING,LOST RPM WHILE MANEUVERING ARND TALL TR
Cause factors
- 64/A/18 A PILOT IN COMMAND FAILED TO MAINTAIN ADEQUATE ROTOR R.P.M. Cause — pilot/personnel action
- 84/J/7 J MISCELLANEOUS EVASIVE MANEUVER TO AVOID COLLISION Joint cause
- 83/J/I J TERRAIN HIGH OBSTRUCTIONS Joint cause
Decoded against the NTSB Form 6120.4 cause-factor codebook (ct_Pre1982 table). Each row shows the raw triplet, modifier (Cause / Factor / etc.), category, and specific code.
Source: NTSB pre-1982 historical archive. Docket
3 1890.
Source file
NTSB_1976_3_1890.txt.
Modern CAROL record 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.