NTSB CAROL · Event
Event ANC81IA021
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
DEHAVILLAND DHC-6 · N305EH
Damage
Minor
Craft type
Airplane
Classification
C
Light condition
Dawn
Weather
IMC
Phase of flight
C0
Operator type
E
Airport
AMBLER
Kind of flying
CI
Weather at impact
Sky
OBSCURATION
Wind
045° / 3 kt
Aircraft history
Serial number
000000000350
Total time
8,282 hrs
Pilot
Certificate
DA (DA)
Total hours
6,147
Age
31
Probable cause (from PRE1982.MDB)
SNW.BERM,8 IN FRESH SNW,FLAT LGT CONDS.MAIL FLT.
Investigator remarks
SNW CLRD UNEVENLY FM CTRLN OF RWY/MARKERS.UN SEE
Cause factors
- 68/C/H2 C PERSONNEL IMPROPER/INADEQUATE SNOW REMOVAL Cause
- 64/C/35 C PILOT IN COMMAND SELECTED UNSUITABLE TERRAIN Cause
- 80/L/BC L AIRPORTS/AIRWAYS/FACILITIES SNOW ON RUNWAY
- 80/L/BD L AIRPORTS/AIRWAYS/FACILITIES SNOW WINDROWS
- 80/L/BE L AIRPORTS/AIRWAYS/FACILITIES UNMARKED OBSTRUCTIONS
- 82/L/A L WEATHER LOW CEILING
- 82/L/D L WEATHER SNOW
- 88/L/78 L MISCELLANEOUS ACTS,CONDITIONS WHITEOUT
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
5 0004.
Source file
NTSB_1981_5_0004.txt.
Modern CAROL record on
data.ntsb.gov ↗.
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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.
- NASA NTRS 2019 · Contractor Report (CR)
DHC-6 Twin Otter Tailplane Airfoil Section Testing in the Ohio State University 7x10 Wind Tunnel
Ice contaminated tailplane stall (ICTS) has been found to be responsible for 16 accidents with 139 fatalities over the last three decades, and is suspected to have played a role in other accidents and…
- NASA NTRS 2019 · Reprint (Version printed in journal)
In-Flight Aerodynamic Measurements of an Iced Horizontal Tailplane
The effects of tailplane icing on aircraft dynamics and tailplane aerodynamics were investigated using, NASA's modified DHC-6 Twin Otter icing research aircraft.
- NASA NTRS 2019 · Reprint (Version printed in journal)
Investigation of Dynamic Flight Maneuvers With an Iced Tailplane
A detailed analysis of two of the dynamic maneuvers, the pushover and elevator doublet, from the NASA/FAA Tailplane Icing Program are discussed.
Browse the full corpus — academia portal ↗