# NTSB DEN93FA089: Globe GC-1B, N3783K, Durango, CO, July 27, 1993 - Type: NTSB accident investigation - Classification: Accident · Fatal · Field investigation · Final report - Date: July 27, 1993, 13:00 local (19:00 UTC) - Place: Durango, CO - Coordinates: 37.269317, -107.880752 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=37.2693&lon=-107.8808&mi=10 - Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping) - Highest injury: Fatal - Injuries: 1 fatal, 1 serious - Status: Completed, report September 26, 1994 - Report: Approved by Office Director - NTSB case key (mKey): 11081 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN93FA089 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/11081/pdf - Page: https://openairdocs.org/ntsb/DEN93FA089 ## Probable cause THE PILOT'S ENTRY INTO A BOX CANYON AT AN ALTITUDE INSUFFICIENT TO CLEAR MOUNTAINOUS TERRAIN. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - In flight collision with object, climb - altitude - inadequate, pilot in command (cause) - terrain condition - mountainous/hilly - terrain condition - blind/box canyon - object - tree(s) ## Analysis WHILE ON A LOCAL SIGHTSEEING FLIGHT, THE PILOT DECIDED TO FLY TO PURGATORY, CO, A TRIP HE SAID HE HAD MADE 'MANY TIMES BEFORE.' HE TURNED LEFT INTO WHAT HE THOUGHT WAS THE HERMOSA CREEK DRAINAGE, BUT WAS ACTUALLY THE BUCK CREEK DRAINAGE, AT APPROXIMATELY 6,500 FEET MSL. WHEN HE SAW THE HIGH TERRAIN ON BOTH SIDES AND IN FRONT OF THE AIRPLANE, HE REALIZED HE HAD MADE A MISTAKE, AND HE IMMEDIATELY INITIATED A MAXIMUM PERFORMANCE CLIMB. AS THE AIRPLANE NEARED THE END OF THE CANYON, THE PILOT DECIDED NOT TO RISK STALLING THE AIRPLANE BY ATTEMPTING TO TURN AROUND. INSTEAD, HE SLOWED THE AIRPLANE TO JUST ABOVE STALL SPEED. THE AIRPLANE STRUCK THE TOPS OF TREES, SPUN AROUND, AND COLLIDED WITH THE TERRAIN. THE PASSENGER'S FATAL INJURIES WERE DUE TO POST IMPACT FIRE. ## Factual narrative HISTORY OF FLIGHT On July 27, 1993, at 1300 mountain daylight time, a Globe GC-1B, N3783K, collided with trees and impacted mountainous terrain approximately ten miles northwest of Durango, Colorado. The airplane was destroyed by impact forces and a post impact fire. The private pilot was seriously injured and his passenger was fatally injured. Visual meteorological conditions prevailed for this personal flight. The pilot reported in the Pilot/Operator Report that he took off from the Durango-La Plata County Airport at about 1220 for a local sightseeing flight. At approximately 1300, a sailplane instructor, who was flying in the local area, observed a fireball on the side of a mountain that was later determined to be the accident site. The airplane was reported missing at about 1900 that evening. The wreckage was discovered the following morning, and the pilot was rescued at about 0815. The following is based on an interview with the pilot and on the Pilot/Operator Report he submitted. After flying around Animas Valley, the pilot decided to fly over to Purgatory, a trip he said he had made "many times before." He turned left into what he thought was the Hermosa Creek drainage but was actually the Buck Creek drainage (see enclosed map). His altitude was approximately 6,500 feet MSL. When he saw the high terrain on both sides and in front of the airplane, he realized he had made a mistake and immediately initiated a maximum performance climb. As the airplane neared the end of the canyon, the pilot decided not to risk stalling the airplane by attempting to turn around. Instead, he slowed the airplane to just above stall speed. He further reported that the airplane struck the tops of the trees, spun around, and collided with the terrain. WRECKAGE AND IMPACT INFORMATION The accident site was situated at the 8,900 foot level on the south slope of a canyon and in a heavily timbered area. Strike marks were noted on several trees. The wreckage was confined to a small area. The separated left wing was next to the fuselage. The leading edge had compression damage. Both of the propeller blades exhibited 45 and 90 degree chordwise scratches on the cambered surfaces. ## Aircraft - Registration: [N3783K](https://openairdocs.org/deregistered/N3783K-1994-05-03), registration cancelled 1994-05-03, S/N 1476 (OpenAirDocs) - Reported make and model: GLOBE GC-1B - Registry model: [Globe GC-1B](https://openairdocs.org/model/globe-gc-1b) (registry code 9230104) (OpenAirDocs) - Category: Airplane - Serial number: 1476 - Airframe hours: 1267 - Engines: Rolls-Royce TSIO-360-D0 225 horsepower reciprocating - Damage: Destroyed - Fire: On-Ground - Flight: Personal, Part 91 - Registered owner: Mckinnon, Richard E. - Airworthiness certificate: Standard, Normal - Last inspection: Annual, June 1, 1993, 1 hours before ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 60; private; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 2, valid medical--w/ waivers/lim; seat: left; flight hours: 5,006 total, 340 in this make and model, 14 in the last 90 days, 2 in the last 30 days ## Weather - Conditions: Visual (VMC), Day - Wind: 190° at 8 knots, gusting 14 - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 82 °F, dew point 34 °F - Altimeter: 30.00 inHg - Observed at: DRO, 19 nm away ## FAA reports on this event (1) The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs). - [Accident 19930727025919A](https://openairdocs.org/incident/19930727025919A), Jul 27, 1993: Univac GC1B, Durango, CO, Destroyed, 1 fatal. Turned in wrong canyon en route to purgotory. Unable outclimb terrain. Tried turn around. Hit trees. Fire fatality. From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.