ASN Wikibase Occurrence # 136132
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| Date: | Saturday 20 October 1984 |
| Time: | 13:38 |
| Type: |  Cessna 414 |
| Owner/operator: | Metropolitan Intl Investment & Security Services |
| Registration: | N1597T |
| MSN: | 414-0377 |
| Year of manufacture: | 1973 |
| Total airframe hrs: | 18035 hours |
| Fatalities: | Fatalities: 0 / Occupants: 4 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | Cheyenne Regional Airport, 1 mile North of Cheyenne, Wyoming -
 United States of America
|
| Phase: | Initial climb |
| Nature: | Executive |
| Departure airport: | Cheyenne Regional Airport, Cheyenne, Wyoming (CYS/KCYS) |
| Salt Lake City International Airport, Salt Lake City, Utah (SLC/KSLC) | |
| Confidence Rating: |  Information is only available from news, social media or unofficial sources |
THE AIRCRAFT DEPARTED THE AIRPORT IN IFR CONDITIONS (SNOWING) & WAS OBSERVED STAGGERING INTO THE AIR. SHORTLY AFTER TAKEOFF THE AIRCRAFT STRUCK POWER LINES & CRASHED INTO HOMES IN A RESIDENTIAL AREA.
INVESTIGATION REVEALED THAT THE AIRCRAFT HAD ACCUMULATED ICE & IN ADDITION WAS OVER THE CERTIFIED MAXIMUM GROSS WEIGHT. THERE WAS NO EVIDENCE OF AIRFRAME, FLIGHT CONTROL OR ENGINE FAILURE/MALFUNCTION PRIOR TO IMPACT WITH THE POWER LINES.
Probable Cause and Findings
The National Transportation Safety Board determines the probable cause(s) of this accident to be:
Occurrence #1: IN FLIGHT ENCOUNTER WITH WEATHER
Phase of Operation: TAKEOFF - ROLL/RUN
1. (F) WEATHER CONDITION - FOG
2. (F) WEATHER CONDITION - SNOW
3. (C) FLIGHT INTO KNOWN ADVERSE WEATHER - PERFORMED - PILOT IN COMMAND
4. (F) OVERCONFIDENCE IN PERSONAL ABILITY - PILOT IN COMMAND
----------
Occurrence #2: IN FLIGHT COLLISION WITH OBJECT
Phase of Operation: TAKEOFF - INITIAL CLIMB
5. (F) OBJECT - WIRE,STATIC
6. (C) PROPER CLIMB RATE - NOT MAINTAINED - PILOT IN COMMAND
7. (F) AIRCRAFT WEIGHT AND BALANCE - EXCEEDED - PILOT IN COMMAND
----------
Occurrence #3: IN FLIGHT COLLISION WITH TERRAIN/WATER
Phase of Operation: DESCENT - UNCONTROLLED
Sources:
1. NTSB Accident Number DEN85FA015 at https://app.ntsb.gov/pdfgenerator/ReportGeneratorFile.ashx?EventID=20001214X41335&AKey=1&RType=Final&IType=FA
2. FAA: http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?NNumbertxt=1597T
3. http://baaa-acro.sindev.ch/crash/crash-cessna-414-chancellor-cheyenne
4. https://en.wikipedia.org/wiki/Cheyenne_Regional_Airport
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 21-Dec-2016 19:26 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 05-Jul-2018 18:16 | Dr. John Smith | Updated [Time, Operator, Location, Phase, Departure airport, Destination airport, Source, Narrative] |
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