# NTSB LAX87FA040: Boeing A75N1, N621SR, Corona, CA, November 15, 1986 - Type: NTSB accident investigation - Classification: Accident · Serious injuries · Field investigation · Final report - Date: November 15, 1986, 15:15 local (23:15 UTC) - Place: Corona, CA - Location: 33.8753° N, 117.5664° W: Placed by OpenAirDocs: center of Corona, CA, within about 6 miles (OpenAirDocs) - Nearby events: https://openairdocs.org/map.md?lat=33.8753&lon=-117.5664&mi=10 - Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping) - Highest injury: Serious injuries - Injuries: 2 serious, 1 uninjured - Status: Completed, report March 30, 1988 - Report: Approved by Office Director - NTSB case key (mKey): 25357 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX87FA040 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/25357/pdf - Page: https://openairdocs.org/ntsb/LAX87FA040 ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Midair collision, approach - vfr pattern - final approach - procedures/directives - not followed, pilot in command (cause) - radio communications - not used, pilot in command (contributing factor) - visual separation - not identified, pilot in command (cause) - visual lookout - not maintained, pilot in command (cause) - visual lookout - not maintained, pilot of other aircraft (cause) - planned approach - improper, pilot in command (cause) - planned approach - improper, pilot of other aircraft (cause) - In flight collision with terrain/water, descent - uncontrolled - Midair collision, approach - vfr pattern - final approach - traffic advisory - not performed, pilot of other aircraft (contributing factor) - vfr procedures - improper, pilot in command (cause) - visual lookout - not maintained, pilot in command (cause) - visual lookout - not maintained, pilot of other aircraft (cause) - planned approach - improper, pilot in command (cause) - planned approach - improper, pilot of other aircraft (cause) - procedures/directives - not followed, pilot in command (cause) - In flight collision with terrain/water, descent - uncontrolled ## Analysis (aircraft 2) THE PLT OF N621SR SAID THAT AS HE ENTERED THE PATTERN DOWNWIND HE SAW ONLY ONE LOW WING ACFT WHICH WAS JUST TURNING FINAL FOR RWY 25. ON SHORT FINAL THE PLT SAID HE NOTICED THE WING AND COCKPIT OF THE OTHER ACFT IN HIS LEFT SIDE PERIPHIAL VISION ONE SECOND PRIOR TO THE COLLISION. THE PLT OF N80579 SAID THAT HE ENTERED THE PATTERN BEHIND A PA28 ACFT, AND, AS HE TURNED FINAL, HE NOTICED THAT THE SPEED DIFFERENCE BETWEEN HIS ACFT AND THE PA28 WAS ERRODING THE SPACING TO THE POINT THAT HE ELECTED TO DO A 360 DEGRE TURN ON FINAL TO ALLOW THE PA28 TIME TO LAND. ON SHORT FINAL THE PLT FELT A VIOLENT JERK AND THEN SAW THE BOEING PROP CHEWING INTO HIS RIGHT WING. THE PLT OF N621SR SAID HE WAS MONITORING THE UNICOM, BUT DID NOT MAKE ANY POSITION REPORTS. THE PLT OF N80579 SAID HE MADE '5 OR 6' POSITION REPORTS, INCLUDING ONE DURING THE 360 TURN, BUT HEARD NONE FROM THE BOEING. ## Analysis (aircraft 1) THE PLT OF N621SR SAID THAT AS HE ENTERED THE PATTERN DOWNWIND HE SAW ONLY ONE LOW WING ACFT WHICH WAS JUST TURNING FINAL FOR RWY 25. ON SHORT FINAL THE PLT SAID HE NOTICED THE WING AND COCKPIT OF THE OTHER ACFT IN HIS LEFT SIDE PERIPHIAL VISION ONE SECOND PRIOR TO THE COLLISION. THE PLT OF N80579 SAID THAT HE ENTERED THE PATTERN BEHIND A PA28 ACFT, AND, AS HE TURNED FINAL, HE NOTICED THAT THE SPEED DIFFERENCE BETWEEN HIS ACFT AND THE PA28 WAS ERRODING THE SPACING TO THE POINT THAT HE ELECTED TO DO A 360 DEGREE TURN ON FINAL TO ALLOW THE PA28 TIME TO LAND. ON SHORT FINAL THE PLT FELT A VIOLENT JERK AND THEN SAW THE BOEING PROP CHEWING INTO HIS RIGHT WING. THE PLT OF N621SR SAID HE WAS MONITORING THE UNICOM, BUT DID NOT MAKE ANY POSITION REPORTS. THE PLT OF N80579 SAID HE MADE '5 OR 6' POSITION REPORTS, INCLUDING ONE DURING THE 360 TURN, BUT HEARD NONE FROM THE BOEING. ## Aircraft 1 - Registration: [N621SR](https://openairdocs.org/aircraft/N621SR), registered now, S/N 75-3092, built 1942 (OpenAirDocs) - Reported make and model: BOEING A75N1 - Registry model: [Boeing A75N1(PT17)](https://openairdocs.org/model/boeing-a75n1-pt17) (registry code 1380134) (OpenAirDocs) - Registry engine: [Pratt & Whitney R-985 series](https://openairdocs.org/engine/pratt-whitney-r-985-series) (registry code 52008, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 753092 - Airframe hours: 6707 - Engines: LYCOMING R680-B4E 225 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Operator: Hartley I. Folstad - Registered owner: Folstad, Hartley I - Airworthiness certificate: Standard, Normal - Last inspection: Annual, October 24, 1986, 8 hours before - Departed: CNO, CHINO, CA - Destination: L66 - Airport: L66, Corona Muni., runway 25, 3,200 × 60 ft, asphalt ## Aircraft 2 - Registration: [N80579](https://openairdocs.org/deregistered/N80579-2000-05-04), registration cancelled 2000-05-04, S/N 82 (OpenAirDocs) - Reported make and model: GLOBE GC-1A - Registry model: [Globe GC-1A](https://openairdocs.org/model/globe-gc-1a) (registry code 9230102) (OpenAirDocs) - Category: Airplane - Serial number: 82 - Airframe hours: 1771 - Engines: Continental C145-2 145 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Operator: Maya, Arye - Registered owner: James L Duffin - Airworthiness certificate: Standard, Normal - Last inspection: Annual, November 3, 1986, 7 hours before - Departed: HMT, HEMET, CA - Destination: L66, CORONA, CA - Airport: L66, Corona Muni., runway 25, 3,200 × 60 ft, asphalt ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot, aircraft N621SR; age 53; airline transport, flight engineer, commercial, flight instructor; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 2, valid medical--w/ waivers/lim; seat: front; flight hours: 4,067 total, 677 in this make and model, 2,670 as pilot in command, 205 in the last 90 days, 3 in the last 24 hours - Pilot, aircraft N80579; age 39; military, private, commercial; airplane ratings: single-engine land; instrument ratings: helicopter; medical: class 2, valid medical--no waivers/lim.; seat: left; flight hours: 4,794 total, 290 in this make and model, 4,383 as pilot in command, 31 in the last 90 days, 12 in the last 30 days, 1 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 240° at 12 knots - Visibility: 15 statute miles - Lowest ceiling: none - Altimeter: 30.00 inHg - Observed at: CNO, 6 nm away ## FAA reports on this event (2) The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs). - [Accident 19861115055631A](https://openairdocs.org/incident/19861115055631A), Nov 15, 1986: Boeing A75N1, Corona, CA, Substantial damage. Made short pattern and came down on top of swift N80579 that was on a long final. Did not announce pattern position - [Accident 19861115055632A](https://openairdocs.org/incident/19861115055632A), Nov 15, 1986: Univac GC1A, Corona, CA, Substantial damage. Was struck from above while on final by a stearman A75 that had made a steep tight final for the same runway. From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.