Gates Learjet 24B N864CL
9 October 1984 · San Francisco, California, United States · Fatal
Summary
On 9 October 1984 at about 02:49 local time, a Gates Learjet 24B registered N864CL, operated by Clay Lacy AV Inc, was involved in an accident near San Francisco, California, United States. 3 people were on board and 3 died. The aircraft was destroyed. No probable cause statement is available for this record.
The record
- Date
- at 02:49
- Classification
- Accident
- Location
- San Francisco, California, United States
- Nearest airport
- San Francisco Int'l (SFO)
- Coordinates
- 37.5595, -122.3691
- Aircraft
- Gates Learjet 24B
- Registration
- N864CL
- Category
- Airplane
- Engines
- 2
- Operator
- Clay Lacy AV Inc
- Operating rule
- Part 91: General Aviation
- Purpose of flight
- Positioning
- Phase of flight
- Not recorded
- Route
- Unknown → Van Nuys
- Aircraft damage
- Destroyed
- Weather
- IMC
- Light
- Night/Dark
- NTSB number
- LAX85MA008
People
3 people died.
| On board | Died | Serious | Minor | Uninjured |
|---|---|---|---|---|
| 3 | 3 | 0 | 0 | 0 |
Probable cause
The NTSB has not published a probable cause for this record. No probable cause statement is present in the source data.
Nothing about the cause is stated here that is not in the source record.
Read the full NTSB narrative
THE ACFT, A GATES LEAR JET 24B, MODIFIED BY A HOWARD/RAISEBACH MARK II CONVERSION, WAS CLEARED FOR TAKEOFF ON RWY 28L. TOWER PSNL ESTIMATED THAT THE ACFT ROTATED FOR TAKEOFF AT 3200' DOWN THE RWY & WAS AT APRX 200' AGL WHEN THE PLT WAS INSTRUCTED TO CONTACT DEPARTURE CONTROL. WITNESSES OBSERVED THE ACFT CLIMBING IN A WINGS LEVEL ATTITUDE WHEN IT ENTERED THE BROKEN CLD LAYER AT ABOUT 600' AGL. MOMENTS LATER, THE ACFT WAS OBSERVED DESCENDING OUT OF THE CLDS AT A STEEP ANGLE& IN A LEFT WING LOW/NOSE DOWN ATTITUDE. THE ACFT IMPACTED BETWEEN RWYS 28L & 28R, APRX 10,000' FROM THE APCH ENDS. WITNESSES REPORTED THAT THE ENGS SOUNDED LIKE THEY WERE OPERATING AT A HI PWR SETTING. AN EXAM OF THE ENGS REVEALED EVIDENCE THAT BOTH WERE AT OR ABOVE 92% PWR AT IMPACT. NO PREIMPACT PART FAILURE/MALFUNCTION WAS FOUND. RECORDS REVEALED2 AUTOPLT DISCREPANCIES ON 10/4/84; ONE INDCD THE ROLL MODE WAS SENSITIVE; THE OTHER INDCD THE AUTOPLT INTERMITTENTLY ROLLED THE ACFT INTO A STANDARD RATE LEFT BANK WHEN ENGAGED. RPRTDLY, THE AUTOPLT WOULD NOT HAVE BEEN USED FOR TAKEOFF.
Quoted verbatim from the NTSB record.
Other Gates Learjet 24 accidents
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 10 Nov 1984 | Gates Learjet 24F | St. Thomas | - | Fatal | 2 |
| 26 Jan 1983 | Gates Learjet 24 | Cleveland, Ohio, United States | Epps Air Service, Inc. | No injuries | - |
| 23 Oct 1985 | Gates Learjet 24D | Juneau, Alaska, United States | - | Fatal | 4 |
| 20 Aug 1985 | Gates Learjet 24D | Gulkana, Alaska, United States | ERA Helicopters, Inc. | Fatal | 3 |
| 12 May 1982 | Gates Learjet 24B | Ft. Myer, Florida, United States | Delaware Victor Air Service | No injuries | - |
| 11 Dec 2001 | Gates Learjet 24D | Sierra Blanca, Texas, United States | Air Cargo Express Inc. | Fatal | 2 |
Other accidents in this area
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 28 Jan 1984 | Cessna 401A | San Francisco, California, United States | - | No injuries | - |
| 4 Aug 1984 | Eipper QUICKSILVER MX | Thousand Oaks, California, United States | - | Serious injuries | - |
| 5 Feb 1984 | Hughes 500C (369HS) | San Diego, California, United States | - | Serious injuries | - |
| 5 Feb 1984 | Cessna 180J | Hayward, California, United States | - | Serious injuries | - |
| 14 Jul 1984 | Piper PA-31T | Concord, California, United States | - | Fatal | 6 |
| 5 Feb 1984 | Cessna 150M | Fremont, California, United States | Fremont Flying Service | No injuries | - |