NTSB CAROL · Event
Event ANC77DAA11
Registry · N4177Z
FAA Aircraft Registry record.
Make / Model
PIPER PA-18-150
Year of manufacture
1966 · 11 years old at event
Engine
LYCOMING 0-320 SERIES (180 hp)
Seats / Engines
2 seats · 1 engine
Last airworthiness date
19660110
ADS-B equipped
Yes — Mode-S A4F186
Registrant of record
CRUISER LLC
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
PIPER PA-18 · N4177Z
Damage
Substantial
Craft type
Airplane
Classification
Accident
Light condition
Night
Weather
VMC
Phase of flight
EE
Operator type
D
Kind of flying
B0
Weather at impact
Sky
CLEAR
Aircraft history
Serial number
0000018-8355
Total time
4,300 hrs
Pilot
Certificate
Commercial
Total hours
7,100
Age
42
Probable cause (from PRE1982.MDB)
DITIONS.
Investigator remarks
POOR DEPTH PERCEPTION CUES DUE TO FLAT LIGHT CON
Cause factors
- 64/A/25 A PILOT IN COMMAND IMPROPER LEVEL OFF Cause — pilot/personnel action
- 83/J/B J TERRAIN SNOW-COVERED 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 0543.
Source file
NTSB_1977_3_0543.txt.
Modern CAROL record on
data.ntsb.gov ↗.
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