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ASN Wikibase Occurrence # 60145
Last updated: 30 January 2020
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Date:18-MAY-2009
Time:18:01
Type:Silhouette image of generic C172 model; specific model in this crash may look slightly different
Cessna 172N
Owner/operator:Aero Aviation Llc
Registration: N738NN
C/n / msn: 17270109
Fatalities:Fatalities: 2 / Occupants: 2
Aircraft damage: Substantial
Category:Accident
Location:Pacific Ocean off Long Beach, California -   United States of America
Phase: En route
Nature:Training
Departure airport:Long Beach, CA (LGB)
Destination airport:Long Beach, CA (LGB)
Investigating agency: NTSB
Narrative:
A Cessna 172N and a Cessna 310P collided in flight in a common practice area for airwork. A witness was flying on a southerly heading within the immediate area of the collision and noticed a silhouette of an airplane, which appeared to be a Cessna 172 at his 10 to 11 o'clock position. The airplane appeared to be performing maneuvers and making turns in a counter-clockwise direction, followed by a turn in a clockwise direction. The witness stated that he noticed another airplane entering the area from the west, traveling at a high rate of speed on an easterly heading. He added that he was unable to see what kind of airplane it was and only saw a "black object" due to the sun being almost on the horizon. The witness continued to watch both airplanes and noted the fast moving airplane was continuing on an easterly heading while the Cessna 172N was still performing maneuvers on a southerly heading around the same altitude. The witness observed both airplanes collide, disintegrate into small pieces, and fall to the ocean below. Review of recorded radar data revealed that the Cessna 310P was maneuvering within a common practice area about 5 miles south of the shoreline at various altitudes. The data depicted the Cessna 172N on a southerly course at an altitude of 3,000 feet msl while conducting a series of shallow left and right turns prior to performing a left 360-degree turn to a southerly heading. The Cessna 310P was on an easterly heading at an altitude of 3,000 feet msl for about 2 minutes prior to the collision. The radar data depicted the two airplanes converging nearly perpendicular to one another about five miles south of the shoreline. During examination of the recovered wreckage, transfer marks were identified consistent with the radar-derived collision angle. Both airplanes were operating under visual conditions when they collided.
Probable Cause: The failure of both pilots to see and avoid each other's aircraft.

Sources:

NTSB: https://www.ntsb.gov/_layouts/ntsb.aviation/brief.aspx?ev_id=20090519X12854&key=1


Revision history:

Date/timeContributorUpdates
18-May-2009 23:29 slowkid Added
18-May-2009 23:47 slowkid Updated
19-May-2009 00:03 Anon. Updated
19-May-2009 04:35 slowkid Updated
19-May-2009 07:00 slowkid Updated
19-May-2009 23:54 slowkid Updated
21-Dec-2016 19:25 ASN Update Bot Updated [Time, Damage, Category, Investigating agency]
02-Dec-2017 14:56 ASN Update Bot Updated [Operator, Other fatalities, Departure airport, Destination airport, Source, Narrative]

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