NTSB CAROL · Event
Event OAK66A0036
Registry · N2136U
FAA Aircraft Registry record.
Make / Model
BOEING 777-300ER
Year of manufacture
2017
Engine
GE GE90-115B
Seats / Engines
552 seats · 2 engines
Last airworthiness date
20170313
ADS-B equipped
Yes — Mode-S A1C7E4
Registrant of record
UNITED AIRLINES 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
BRANTLY B-2 · N2136U
Damage
Substantial
Craft type
Balloon
Classification
Accident
Light condition
Dawn
Weather
VMC
Phase of flight
D4
Operator type
Personal/private
Airport
SONOMA VALLEY
Kind of flying
A0
Weather at impact
Sky
CLEAR
Wind
270° / 20 kt
Temp
55° F
Aircraft history
Total time
486 hrs
Pilot
Certificate
Flight instructor (CFI)
Total hours
209
Age
27
Probable cause (from PRE1982.MDB)
FLT INSTR-INADEQUATE INSTRUCTION.
Investigator remarks
STUDENT ATTEMPTED HOVER DOWNWIND TURNAROUND
Cause factors
- 66/A/23 A DUAL STUDENT Cause — pilot/personnel action
- 84/A/J A MISCELLANEOUS WRITTEN CAUSE Cause — pilot/personnel action
- 64/A/30 A PILOT IN COMMAND INADEQUATE SUPERVISION OF FLIGHT Cause — pilot/personnel action
- 88/J/10 J MISCELLANEOUS ACTS,CONDITIONS INSTRUCTIONS-MISINTERPRETED 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
2 0046.
Source file
NTSB_1966_2_0046.txt.
Modern CAROL record on
data.ntsb.gov ↗.
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