2009 California mid-air collision
United States Coast Guard Lockheed HC-130H Hercules and United States Marine Corps Bell AH-1W Super Cobra · Mid-air collision
Event
- Event typeAccident: someone killed or seriously injured, or the aircraft substantially damaged (NTSB definition). Incident: an occurrence that affected or could have affected safety, short of that. Glossary
- Accident
- Event fatalities
- 9 · all aircraft and ground
- Ground fatalities
- Unknown
- Occupants
- 9
- Survivors
- 0
- InjuriesFatal: death within 30 days. Serious: over 48 hours in hospital within a week, most broken bones, severe bleeding, nerve or organ damage, or serious burns. Minor: anything less. Glossary
- Unknown
- OperationWhat kind of flying it was, grouped by the rules it flew under: airline (US Part 121), air taxi and commuter (Part 135), general aviation (Part 91 and similar), military or government. Glossary
- Military
Aircraft 1 · Lockheed HC-130H Hercules
- Aircraft type
- Lockheed HC-130
- Category
- Airplane · from aircraft type
- RegistrationThe aircraft's tail number, such as N12345 or G-ABCD. Registrations are reissued, so the same one years apart can be a different aircraft. Glossary
- 1705
- Operator
- United States Coast Guard
- Onboard fatalities
- 7
- Occupants
- 7
- Survivors
- 0
- InjuriesFatal: death within 30 days. Serious: over 48 hours in hospital within a week, most broken bones, severe bleeding, nerve or organ damage, or serious burns. Minor: anything less. Glossary
- None · no survivors
- Route
- From McClellan AirfieldTo McClellan Airfield
Aircraft 2 · Bell AH-1W Super Cobra
- Aircraft type
- Bell AH-1
- Category
- Helicopter · from aircraft type
- RegistrationThe aircraft's tail number, such as N12345 or G-ABCD. Registrations are reissued, so the same one years apart can be a different aircraft. Glossary
- Unknown
- Operator
- United States Marine Corps
- Onboard fatalities
- 2
- Occupants
- 2
- Survivors
- 0
- InjuriesFatal: death within 30 days. Serious: over 48 hours in hospital within a week, most broken bones, severe bleeding, nerve or organ damage, or serious burns. Minor: anything less. Glossary
- None · no survivors
- Route
- From not recordedTo not recorded
Cause areas
- Environmental issues › Operating environment
From the investigation findings the Wikipedia article reports, sorted into the NTSB's cause areas with AI assistance.
Approximate · Coordinates from the Wikipedia article; not checked against an investigation report.
From the Wikipedia article
The 2009 California mid-air collision occurred at sea, west of San Diego, on 29 October. It involved a Lockheed HC-130H Hercules of the United States Coast Guard and a Bell AH-1 SuperCobra of the U.S. Marine Corps. There were no survivors among the nine crewmates aboard either aircraft.
Accident
At 19:10 local time on 29 October 2009 (02:10 on 30 October UTC), a Lockheed HC-130H Hercules aircraft of the United States Coast Guard and a Bell AH-1W Super Cobra helicopter of the United States Marine Corps collided in mid-air. The location of the accident was 24 km east off San Clemente Island, California. The Hercules was carrying a crew of seven and the Cobra a crew of two people; there were no survivors. Eyewitnesses reported seeing a fireball in the sky. Debris from the collision was reported at the scene. The Hercules was on a Search and Rescue mission to search for an overdue john boat while the Super Cobra was on a training flight. Two Sikorsky CH-53E helicopters along with, and were sent to search the area., and later joined the search.
The search for survivors was cancelled on 1 November 2009 after searching 644 sqmi of ocean, including approximately 50 miles of floating debris. The effort was converted to a recovery operation. All nine individuals in the accident, including seven aboard the Coast Guard plane and two aboard the Marine helicopter were presumed dead.
Investigation and cause
Investigation
A joint investigation by the United States Coast Guard and the U.S. Marine Corps was opened into the accident, headed by Rear Admiral Korn. The investigation concluded in mid-2010 and each agency released its own report of findings. Both agencies found that there was no single cause for the accident, and there was no misconduct on the part of any aircrew involved. However, both identified serious failings on the part of the U.S. Navy air traffic control center that had responsibility for the airspace within which the collision occurred.
Text from the Wikipedia article “2009 California mid-air collision” (revision 1363966644, retrieved 2026-09-18) by its authors, under CC BY-SA 4.0. Extracted as plain text: references, tables, images and some sections are left out. Read the article
Sources
Wikipedia article: 2009 California mid-air collision
- Revision
- 1363966644 · 2026-07-13 · retrieved 2026-09-18
- Wikidata
- Q4613452
- Licence
- Text CC BY-SA 4.0, by the article's authors; Wikidata CC0; town positions GeoNames (CC BY 4.0)
Where each value comes from
- Record
- Wikipedia article "2009 California mid-air collision" (page 24901981, revision 1363966644)
- Date
- Wikipedia infobox: date
- Place and country
- Wikipedia infobox: site
- Map position
- Wikipedia article coordinates
- Aircraft, operator and route
- Wikipedia infobox: aircraft type, registration, operator, origin and destination; route airports from the linked airport articles' Wikidata codes (OurAirports)
- Operation
- operator named as an armed force or military unit in the infobox
- Fatalities
- Wikipedia infobox: total_fatalities
- Ground fatalities
- not stated in the Wikipedia infobox
- Summary
- Wikipedia infobox: summary
Source notes (1)
- Wikipedia · Facts from the Wikipedia article's infobox and coordinates, not checked against an investigation report. Independent review pending.