NTSB CAROL · Event
Event CHI81FEG15
Registry · N9015R
FAA Aircraft Registry record.
Make / Model
BOEING 737-8
TCDS
A16WE · THE BOEING CO
Seats / Engines
175 seats · 2 engines
ADS-B equipped
Yes — Mode-S AC75FA
Registrant of record
BOEING CO
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
ROBINSON R22 · N9015R
Damage
Substantial
Craft type
Balloon
Classification
Accident
Light condition
Night
Weather
VMC
Phase of flight
D1
Operator type
Part 121 (air carrier)
Airport
LUNKEN
Kind of flying
A0
Weather at impact
Sky
CLEAR
Wind
300° / 7 kt
Temp
81° F
Aircraft history
Serial number
000000000010
Total time
531 hrs
Pilot
Certificate
Flight instructor (CFI)
Total hours
3,358
Age
42
Probable cause (from PRE1982.MDB)
R,PN A041-1,FAILED.DRIVE SHAFT BGN SVR VIBRATION.
Investigator remarks
SUPPORT BRACKET FOR TAIL ROTOR DRIVE SHAFT DAMPE
Cause factors
- 78/A/BG A ROTORCRAFT TAIL ROTOR DRIVE SHAFT ASSEMBLY Cause — pilot/personnel action
- 88/A/36 A MISCELLANEOUS ACTS,CONDITIONS FATIGUE FRACTURE Cause — pilot/personnel action
- 88/A/CV A MISCELLANEOUS ACTS,CONDITIONS VIBRATION,EXCESSIVE Cause — pilot/personnel action
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 1715.
Source file
NTSB_1981_3_1715.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.
Related research
What the literature says.
Academic papers and agency reports matching this event's aircraft type. Sourced from NASA NTRS, NTSB Safety Studies, FAA CAMI, AOPA Air Safety Institute, Embry-Riddle Scholarly Commons, arXiv, and the Semantic Scholar academic graph.
Browse the full corpus — academia portal ↗