LAX07LA079

NTSB accident investigation · Waco UPF-7 · Palos Verdes, CA · February 3, 2007

Accident · Minor injuriesLimited investigationFinal report
Date
February 3, 2007, 15:00 local (23:00 UTC)
Place
Palos Verdes, CA
Injuries
1 minor, 1 uninjured
Phase of flight
Maneuvering
Aircraft
N30140Waco UPF-7N49270Boeing A75N1(PT17)
Weather
Visual (VMC) · Day
Status
Completed · report June 30, 2008
Report
Approved by Office Director
Parties
Federal Aviation Administration
Case key
65240

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

On this page

Probable cause

the failure of both pilots to maintain adequate visual lookout and clearance from each other while maneuvering in close proximity.

the failure of both pilots to maintain adequate visual lookout and clearance from each other while maneuvering in close proximity.

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.

Midair collisionManeuvering
Visual lookout - inadequatePilots of both aircraftCause
Clearance - not maintainedPilots of both aircraftCause
Forced landingDescent - emergency
In flight collision with terrain/waterDescent - emergency
Terrain condition - water
Midair collisionManeuvering
Visual lookout - inadequatePilots of both aircraftCause
Clearance - not maintainedPilots of both aircraftCause

Analysis

N30140 and a PT-17 departed the local airport to the south and established radio communication with each other. For approximately 15 minutes, the two airplanes flew independently of each other. During that time, the pilot of N30140 heard over the radio frequency two other pilots that were operating in the area, and the pilot did not see either of the two aircraft. One of those two aircraft was N49270. N30140 and the other PT-17 had then decided to return to the airport. N30140 began to regroup with the PT-17 at an altitude of 3,000 feet mean sea level (msl). Approximately 1,000 feet from the PT-17, the pilot of N30140 felt "a hard impact on my aircraft." The airplane rolled more than 90 degrees to the right in a steep descent. The pilot thought another aircraft struck his; however, he did not see another aircraft. The pilot regained partial control of the airplane and executed a forced landing. During the landing, the airplane stalled approximately 35 feet above the terrain, impacted the terrain, and nosed over. N49270 also departed the same local airport to the south and climbed to 3,000 feet msl. Approximately 20 minutes into the flight, he observed N30140 and another PT-17 coming toward him, and they were not in formation. The two airplanes were flying northwest (N49270 was flying south) and N30140 was a "few hundred feet lower." N49270 and the other PT-17 confirmed visual contact with each other over the radio. N49270 and the other PT-17 intended on joining in formation. With about 1/2 mile separation between the two PT-17s, N30140 crossed under N49270. N49270 then joined up with the other PT-17 and "stabilized on [other PT-17] left wing in the step-up position and headed easterly." Approximately 1 minute later, the pilot of N49270 felt a bump and noticed N30140 was slightly to the left and below his airplane. The pilot of N49270 realized that his propeller contacted the tail section of N30140. N49270 landed uneventfully at the airport.

N30140 and a PT-17 departed the local airport to the south and established radio communication with each other. For approximately 15 minutes, the two airplanes flew independently of each other. During that time, the pilot of N30140 heard over the radio frequency two other pilots that were operating in the area, and the pilot did not see either of the two aircraft. One of those two aircraft was N49270. N30140 and the other PT-17 had then decided to return to the airport. N30140 began to regroup with the PT-17 at an altitude of 3,000 feet mean sea level (msl). Approximately 1,000 feet from the PT-17, the pilot of N30140 felt "a hard impact on my aircraft." The airplane rolled more than 90 degrees to the right in a steep descent. The pilot thought another aircraft struck his; however, he did not see another aircraft. The pilot regained partial control of the airplane and executed a forced landing. During the landing, the airplane stalled approximately 35 feet above the terrain, impacted the terrain, and nosed over. N49270 also departed the same local airport to the south and climbed to 3,000 feet msl. Approximately 20 minutes into the flight, he observed N30140 and another PT-17 coming toward him, and they were not in formation. The two airplanes were flying northwest (N49270 was flying south) and N30140 was a "few hundred feet lower." N49270 and the other PT-17 confirmed visual contact with each other over the radio. N49270 and the other PT-17 intended on joining in formation. With about 1/2 mile separation between the two PT-17s, N30140 crossed under N49270. N49270 then joined up with the other PT-17 and "stabilized on [other PT-17] left wing in the step-up position and headed easterly." Approximately 1 minute later, the pilot of N49270 felt a bump and noticed N30140 was slightly to the left and below his airplane. The pilot of N49270 realized that his propeller contacted the tail section of N30140. N49270 landed uneventfully at the airport.

Factual narrative

On February 3, 2007, approximately 1500 Pacific standard time, a Waco UPF-7 single engine airplane, N30140, and a Boeing A75N1(PT-17) single engine airplane, N49270, collided in midair while maneuvering about 1 mile offshore west of Palos Verdes, California. Both of the airplanes were being operated by their respective owner/pilot's under the provisions of 14 CFR Part 91. The airline transport pilot in the N30140, the sole occupant, sustained minor injuries, and the private pilot in the N49270, the sole occupant, was not injured. N30140 sustained substantial damage and N49270 sustained minor damage. Both airplanes were on a local personal flight, which departed Zamperini Field Airport (TOA) Torrance, California. Visual meteorological conditions prevailed, and no flight plan had been filed for either airplane.

According to the pilot of N30140, he and another PT-17 departed TOA to the south and established radio communication with each other. For approximately 15 minutes, the two airplanes flew independently of each other. During that time, the pilot of N30140 heard over the radio frequency two other pilots that were operating in the area, and the pilot did not see either of the two aircraft. One of those two aircraft was N49270. N30140 and the other PT-17 had then decided to return to TOA. N30140 began to regroup with the PT-17 at an altitude of 3,000 feet mean sea level (msl). Approximately 1,000 feet from the PT-17, the pilot of N30140 felt "a hard impact on my aircraft." The airplane rolled more than 90 degrees to the right in a steep descent. The pilot thought another aircraft struck his; however, he did not see another aircraft. The pilot regained partial control of the airplane and executed a forced landing to shallow water at Cabrillo Beach Park, San Pedro, California. During the landing, the airplane stalled approximately 35 feet above the terrain, impacted the terrain, and nosed over. Examination of the airplane revealed the rudder and elevator control surfaces were destroyed.

According to the pilot of N49270, he departed TOA to the south and climbed to 3,000 feet msl. Approximately 20 minutes into the flight, he observed N30140 and another PT-17 coming toward him, and they were not in formation. The two airplanes were flying northwest (N49270 was flying south) and N30140 was a "few hundred feet lower." N49270 and the other PT-17 confirmed visual with each other over the radio. N49270 and the other PT-17 intended on joining in formation. About 1/2 mile separation between the two PT-17s, N30140 crossed under N49270. N49270 then joined up with the other PT-17 and "stabilized on [other PT-17] left wing in the step-up position and headed easterly." Approximately 1 minute later, N49270 felt a bump and noticed N30140 was slightly to the left and below his airplane. N49270 pulled up and the propeller struck the tail section of N30140. N49270 reported the event to air traffic control and landed uneventfully at TOA. Examination of N49270 revealed damage to the propeller blade tips and a small dent in the lower left wing.

On February 3, 2007, approximately 1500 Pacific standard time, a Waco UPF-7 single engine airplane, N30140, and a Boeing A75N1(PT-17) single engine airplane, N49270, collided in midair while maneuvering about 1 mile offshore west of Palos Verdes, California. Both of the airplanes were being operated by their respective owner/pilot's under the provisions of 14 CFR Part 91. The airline transport pilot in N30140, the sole occupant, sustained minor injuries, and the private pilot in N49270, the sole occupant, was not injured. N30140 sustained substantial damage and N49270 sustained minor damage. Both airplanes were on a local personal flight, which departed Zamperini Field Airport (TOA) Torrance, California. Visual meteorological conditions prevailed, and no flight plan had been filed for either airplane.

According to the pilot of N30140, he and another PT-17 departed TOA to the south and established radio communication with each other. For approximately 15 minutes, the two airplanes flew independently of each other. During that time, the pilot of N30140 heard over the radio frequency two other pilots that were operating in the area, and the pilot did not see either of the two aircraft. One of those two aircraft was N49270. N30140 and the other PT-17 had then decided to return to TOA. N30140 began to regroup with the PT-17 at an altitude of 3,000 feet mean sea level (msl). Approximately 1,000 feet from the PT-17, the pilot of N30140 felt "a hard impact on my aircraft." The airplane rolled more than 90 degrees to the right in a steep descent. The pilot thought another aircraft struck his; however, he did not see another aircraft. The pilot regained partial control of the airplane and executed a forced landing to shallow water at Cabrillo Beach Park, San Pedro, California. During the landing, the airplane stalled approximately 35 feet above the terrain, impacted the terrain, and nosed over. Examination of the airplane revealed the rudder and elevator control surfaces were destroyed.

According to the pilot of N49270, he departed TOA to the south and climbed to 3,000 feet msl. Approximately 20 minutes into the flight, he observed N30140 and another PT-17 coming toward him, and they were not in formation. The two airplanes were flying northwest (N49270 was flying south) and N30140 was a "few hundred feet lower." N49270 and the other PT-17 confirmed visual with each other over the radio. N49270 and the other PT-17 intended on joining in formation. About 1/2 mile separation between the two PT-17s, N30140 crossed under N49270. N49270 then joined up with the other PT-17 and "stabilized on [other PT-17] left wing in the step-up position and headed easterly." Approximately 1 minute later, N49270 felt a bump and noticed N30140 was slightly to the left and below his airplane. N49270 pulled up and the propeller struck the tail section of N30140. N49270 reported the event to air traffic control and landed uneventfully at TOA. Examination of N49270 revealed damage to the propeller blade tips and a small dent in the lower left wing.

Aircraft · 2

Registration
N30140
Reported as
Waco UPF-7
Category
Airplane
Serial number
5537
Airframe hours
6,130.5
Engine
Continental W670-6A, 220 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Ralph A. Baxter
Airworthiness certificate
Standard, Normal
Last inspection
Annual · December 1, 2006
Departed
TOA · Torrance, CA

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.

Registration
N49270
Reported as
Boeing A75N1(PT17)
Category
Airplane
Serial number
75-336
Airframe hours
4,000
Engine
Continental W-670-6N, 220 horsepower, reciprocating
Damage
Minor damage
Flight
Personal · Part 91
Registered owner
Harrison H. Haggard
Airworthiness certificate
Standard, Normal
Last inspection
Annual · January 1, 2007 · 2 hours before
Departed
TOA · Torrance, CA

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 · 2

As NTSB recorded them. NTSB leaves out names.

Role
Pilot, aircraft N30140
Age
82
Injuries
Minor
Certificate
Airline transport
Airplane ratings
Multi-engine land, Single-engine land, Multi-engine sea
Instrument ratings
Airplane
Medical
Class 3, Without waivers/limitations
Last flight review
July 1, 2006
Seat
Rear
Flight hours
25,000 total · 1,200 in this make and model · 21,000 as pilot in command
Role
Pilot, aircraft N49270
Age
76
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, With waivers/limitations
Last flight review
May 1, 2005
Seat
Rear
Flight hours
1,615 total · 1,339 in this make and model · 1,556 as pilot in command · 7 in the last 90 days · 4 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
290° at 10 knots
Lowest ceiling
None
Temperature
64 °F
Altimeter
30.22 inHg

FAA reports on this event · 2

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.