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NTSB Report
April 5, 1992 · Globe GC-1B · N302CB
Cucamonga, CA
Overview
Report Status
Probable Cause
Event Type
Accident
Date
April 5, 1992
Injury Outcomes
1 injury (1 fatality)
Location
Cucamonga, CA
Aircraft
Globe GC-1B
Tail Number
N302CB
Operator
Walter W Campbell
Injuries
Fatal
Aircraft Damage
Destroyed
NTSB Number
LAX92FA169
The pilot, and a friend flying in a second similar model airplane which also crashed, proceeded up a box canyon. During the loose formation flight the accident pilot was in trail. The pilot of the lead airplane reported that both he and his friend were familiar with the canyon. The pilot of the lead airplane reported that entering the canyon he intentionally descended to 250 feet AGL. Witnesses estimated that the lead airplane flew up the canyon between 100 and 200 feet AGL, while the accident (second) airplane flew up the canyon between 300 and 600 feet AGL. The pilot of the lead airplane stated that he broadcast to the accident pilot that he had become trapped in the canyon. The accident airplane was observed to commence a steep left bank (course reversal) turn, and then descend whereupon the sound of an impact was heard. No mechanical malfunctions were found during the examination of the airplane. (See report number LAX92LA166 for details of the other airplane's crash.)
NTSB Probable Cause
THE PILOT'S FAILURE TO MAINTAIN AN ADEQUATE ALTITUDE TO AVOID THE RISING TERRAIN OF THE BOX CANYON, AND, HIS FAILURE TO MAINTAIN AN ADEQUATE AIRSPEED MARGIN ABOVE STALL WHILE MANEUVERING IN AN ATTEMPT TO REVERSE COURSE. A FACTOR IN THE ACCIDENT WAS THE PILOT HAVING BEEN DISTRACTED BY THE LEAD AIRPLANE'S PILOT BROADCAST THAT HE HAD BECOME TRAPPED IN THE CANYON.
Full Narrative
THE PILOT, AND A FRIEND FLYING IN A SECOND SIMILAR MODEL AIRPLANE WHICH ALSO CRASHED, PROCEEDED UP A BOX CANYON. DURING THE LOOSE FORMATION FLIGHT THE ACCIDENT PILOT WAS IN TRAIL. THE PILOT OF THE LEAD AIRPLANE REPORTED THAT BOTH HE AND HIS FRIEND WERE FAMILIAR WITH THE CANYON. THE PILOT OF THE LEAD AIRPLANE REPORTED THAT ENTERING THE CANYON HE INTENTIONALLY DESCENDED TO 250 FEET AGL. WITNESSES ESTIMATED THAT THE LEAD AIRPLANE FLEW UP THE CANYON BETWEEN 100 AND 200 FEET AGL, WHILE THE ACCIDENT (SECOND) AIRPLANE FLEW UP THE CANYON BETWEEN 300 AND 600 FEET AGL. THE PILOT OF THE LEAD AIRPLANE STATED THAT HE BROADCAST TO THE ACCIDENT PILOT THAT HE HAD BECOME TRAPPED IN THE CANYON. THE ACCIDENT AIRPLANE WAS OBSERVED TO COMMENCE A STEEP LEFT BANK (COURSE REVERSAL) TURN, AND THEN DESCEND WHEREUPON THE SOUND OF AN IMPACT WAS HEARD. NO MECHANICAL MALFUNCTIONS WERE FOUND DURING THE EXAMINATION OF THE AIRPLANE. (SEE REPORT NUMBER LAX92LA166 FOR DETAILS OF THE OTHER AIRPLANE'S CRASH.)
Flight
Event TypeAccident
Event Time13:30 PDT
Nearest Airport0nm N
Runway0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftGlobe GC-1B
Tail NumberN302CB
Aircraft CategoryAir
DamageDestroyed
OperatorWalter W Campbell
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · O-360-A1A · Reciprocating · 180
Seats2
People & Injuries
Injury Summary1 injury (1 fatality)
Fatal1
Serious0
Minor0
Uninjured0
Total1
Crew 1Age 36 · Second Class
Conditions
ConditionsVMC
LightDaylight
Wind240° @ 9 kt
Visibility7 sm
CeilingBroken clouds 2500 ft
Temperature / Dew Point64 F / 50
Altimeter29.00 inHg
Observation Time20:51
Weather SourceWFAC