DEN99LA155

NTSB accident investigation · North American SNJ-4 (AT-6) · Mack, CO · August 28, 1999

Accident · Minor injuriesLimited investigationFinal report
Date
August 28, 1999, 11:30 local (17:30 UTC)
Place
Mack, CO
Injuries
1 minor, 1 uninjured
Damage
Substantial damage
Phase of flight
Approach
Aircraft
N7011CNorth American SNJ-4 (AT-6)
Weather
Visual (VMC) · Day
Status
Completed · report November 22, 2000
Report
Approved by Office Director
FAA report
19990828027679A
Case key
47261

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

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Probable cause

The pilot misjudging his distance and altitude from the runway. A factor was the tall crops.

Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

In flight collision with terrain/waterApproach - vfr pattern - final approach
Distance/altitude - misjudgedPilot in commandCause
Maneuver to avoid obstructions - attemptedPilot in command
Terrain condition - cropFactor
Nose overLanding - roll

Analysis

The pilot had landed at this airport 'at least a dozen times' in the past 15 years, and was aware of 'a low crop at the approach end of [runway] 25.' He said he had this same picture in his mind as he made his approach. When he was approximately 200 to 300 feet from the runway, he realized he was too low (the corn stalks were 8 to 10 feet tall). He applied power and up elevator, but the airplane contacted the corn stalks, settled to the ground, rolled a short distance, then nosed over.

Factual narrative

On August 28, 1999, approximately 1130 mountain daylight time, a North American SNJ-4 (AT-6), N7011C, operated by Loma Enterprises LLC, was substantially damaged when it collided with terrain during a landing approach and subsequent nose over at Mack Mesa Airstrip, Mack, Colorado. The commercial pilot received minor injuries but the single passenger was not injured. Visual meteorological conditions prevailed, and no flight plan had been filed for the personal flight being conducted under Title 14 CFR Part 91. The flight originated at Walker Field, Grand Junction, Colorado, approximately 1100.

The pilot indicated in his accident report that he had landed at Mack Mesa Airport "at least a dozen times" in the past 15 years, and was aware of "a low crop at the approach end of [runway] 25." He said he had this same picture in his mind as he made his approach. When he was approximately 200 to 300 feet from the runway, he realized he was too low (the corn stalks were 8 to 10 feet tall). He applied power and up elevator, but the airplane contacted the corn stalks, settled to the ground, rolled a short distance, then nosed over. Both wings and the horizontal and vertical stabilizers were extensively damaged.

Aircraft

Registration
N7011C
Reported as
North American SNJ-4 (AT-6) (SNJ-4 (AT-)
Category
Airplane
Serial number
88-13805
Airframe hours
5,821
Engine
P&W R-1340-AN1, 600 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Loma Enterprises LLC
Airworthiness certificate
Standard, Normal
Last inspection
Annual · July 5, 1999 · 28 hours before
Departed
GJT · Grand Junction, CO
Destination
0CO5
Airport
0CO5 · Mack Mesa, runway 25

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.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
63
Certificate
Commercial
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Front
Flight hours
2,800 total · 675 in this make and model · 6 in the last 90 days · 2 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
160° at 7 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
72 °F, dew point 61 °F
Altimeter
30.00 inHg
Observed at
GJT, 23 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.