- Date
- October 2, 1970
- Place
- Silver Plume, CO · SILVER PLUME, CO
- Injuries
- 30 fatal, 10 serious
- Damage
- Destroyed
- Phase of flight
- Enroute
- Aircraft
- N464MMartin 404
- Status
- Completed · report September 28, 1971
- Report
- Brief approved by the director
- Safety recommendations
- Yes
- Case key
- 79937
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.
On this page
NTSB brief
NTSB’s brief of the accident, as it was printed: the coded facts, with the probable cause and factors.
---------------------------------------------------------------------------------------------------------------------------- FILE DATE LOCATION AIRCRAFT DATA INJURIES FLIGHT PILOT DATA F S M/N PURPOSE ---------------------------------------------------------------------------------------------------------------------------- 3-1127 70/10/2 NR.SILVER PLUME,COLO MARTIN 404 CR- 2 1 0 COMMERCIAL AIRLINE TRANSPORT, AGE TIME - 1200 N464M PX- 28 9 0 CTR PASSG-D 27, 2452 TOTAL HOURS, 123 DAMAGE-DESTROYED OT- 0 0 0 IN TYPE, INSTRUMENT RATED. DEPARTURE POINT INTENDED DESTINATION LAST ENROUTE STOP WICHITA,KANS LOGAN,UT DENVER,COLO TYPE OF ACCIDENT PHASE OF OPERATION STALL: MUSH IN FLIGHT: OTHER PROBABLE CAUSE(S) PILOT IN COMMAND - IMPROPER IN-FLIGHT DECISIONS OR PLANNING FACTOR(S) TERRAIN - HIGH OBSTRUCTIONS PILOT IN COMMAND - INADEQUATE PREFLIGHT PREPARATION AND/OR PLANNING MISCELLANEOUS ACTS,CONDITIONS - IMPROPERLY LOADED AIRCRAFT-WEIGHT-AND/OR C.G. PILOT IN COMMAND - FAILED TO FOLLOW APPROVED PROCEDURES,DIRECTIVES,ETC. PERSONNEL - OPERATIONAL SUPERVISORY PERSONNEL: INADEQUATE SUPERVISION OF FLIGHT CREW WEATHER - HIGH DENSITY ALTITUDE WEATHER BRIEFING - NO RECORD OF BRIEFING RECEIVED WEATHER FORECAST - FORECAST SUBSTANTIALLY CORRECT SKY CONDITION CEILING AT ACCIDENT SITE CLEAR UNLIMITED VISIBILITY AT ACCIDENT SITE PRECIPITATION AT ACCIDENT SITE 5 OR OVER(UNLIMITED) NONE OBSTRUCTIONS TO VISION AT ACCIDENT SITE TEMPERATURE-F NONE 60 WIND DIRECTION-DEGREES WIND VELOCITY-KNOTS 350 10 TYPE OF WEATHER CONDITIONS TYPE OF FLIGHT PLAN VFR NONE FIRE AFTER IMPACT REMARKS- INTNTL OPERATION OF ACFT OVER MTN VALLEY AT ALT TOO LOW FOR SAFE CLIMBOUT OR CRSE REVERSAL.
Aircraft
- Registration
- N464M
- Reported as
- Martin 404
- Category
- Airplane
- Engine
- reciprocating
- Damage
- Destroyed
Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.