- Date
- October 8, 1984, 19:49 local (Oct 9, 1984, 02:49 UTC)
- Place
- San Francisco, CA
- Injuries
- 3 fatal
- Damage
- Destroyed
- Phase of flight
- Initial climb
- Aircraft
- N864CLGates Learjet 24B
- Weather
- Instrument (IMC) · Night/dark
- Status
- Completed
- Report
- Approved by Office Director
- FAA report
- 19841008076619A
- Case key
- 24860
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.
On this page
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.
Analysis
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.
Aircraft
- Registration
- N864CL
- Reported as
- Gates Learjet 24B
- Category
- Airplane
- Serial number
- 229
- Airframe hours
- 25,515
- Engine
- GE CJ610-6, 2,950 lbs thrust, turbo jet
- Damage
- Destroyed
- Fire
- On-Ground
- Flight
- Positioning · Part 91
- Operator
- Clay Lacy Av Inc
- Registered owner
- Hersael Clay Lacy
- Airworthiness certificate
- Standard, Transport
- Last inspection
- AAIP · September 30, 1954 · 661 hours before
- Departed
- SFO
- Destination
- VNY · Van Nuys, CA
- Flight plan
- IFR
- Airport
- SFO · San Francisco Int'L, runway 28L, 10,600 × 200 ft, asphalt
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
As NTSB recorded them. NTSB leaves out names.
- Role
- Pilot
- Age
- 32
- Certificates
- Airline transport, Flight instructor, Commercial
- Airplane ratings
- Multi-engine land, Single-engine land
- Instrument ratings
- Airplane
- Medical
- Class 1, Valid Medical--no waivers/lim.
- Seat
- Left
- Toxicology
- Performed
- Flight hours
- 8,600 total · 2,500 in this make and model · 1 in the last 24 hours
Weather
- Conditions
- Instrument (IMC) · Night/dark
- Wind
- 280° at 11 knots
- Visibility
- 12 statute miles
- Lowest ceiling
- 600 ft broken
- Temperature
- 63 °F, dew point 59 °F
- Altimeter
- 30.00 inHg
- Observed at
- SFO
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.