Date:	Friday 12 September 1975
Time:	15:50
Type:	Piper PA-30-160 Twin Comanche
Owner/operator:	Oak Ridge Estates
Registration:	N7813Y
MSN:	30-1971
Year of manufacture:	1969
Fatalities:	Fatalities: 2 / Occupants: 2
Other fatalities:	0
Aircraft damage:	Destroyed
Category:	Accident
Location:	Poudre Canyon, near Twin Lakes, Adams County, Colorado -   United States of America
Phase:	Take off
Nature:	Executive
Departure airport:	Denver International Airport, Denver, Colorado (DLA/KDLA)
Destination airport:	Denver International Airport, Denver, Colorado (DLA/KDLA)
Investigating agency:	NTSB
Confidence Rating:	Accident investigation report completed and information captured

Narrative:
Written off (destroyed) September 12, 1975 when crashed into trees at Poudre Canyon, near Twin Lakes, Adams County, Colorado (at approximate Coordinates: 39°49′30″N 105°0′16″W): aircraft circled trying to out-climb rising terrain, and flew into a blind canyon. Both crew killed. According to the following excerpt from the official NTSB report into the accident:

"TYPE OF ACCIDENT: COLLIDED WITH TREES
PHASE OF OPERATION IN FLIGHT: OTHER
PROBABLE CAUSE(S)
PILOT IN COMMAND - IMPROPER IN-FLIGHT DECISIONS OR PLANNING
MISCELLANEOUS ACTS,CONDITIONS - FLEW INTO BLIND CANYON
FACTOR(S)
WEATHER - LOW CEILING
TERRAIN - HIGH OBSTRUCTIONS"

NOTE: Although the NTSB report gives departure airport (and arrival airport) as "UNKNOWN/NOT RECORDED", the location of the crash is about 25 miles north-north-west of Denver International Airport. It is therefore logical to presume that the aircraft was either travelling from (or to) this airport

1. NTSB Identification: DEN7LAD016 at https://www.ntsb.gov/_layouts/ntsb.aviation/brief.aspx?ev_id=50594&key=0
2. FAA: http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?omni=Home-N-Number&nNumberTxt=7813Y
3. http://planecrashmap.com/plane/co/N7813Y/

Date/time	Contributor	Updates
25-Feb-2008 12:00	ASN archive	Added
17-Mar-2017 23:40	Dr.John Smith	Updated [Aircraft type, Operator, Location, Phase, Nature, Departure airport, Destination airport, Source, Narrative, ]