- Date
- July 8, 1990, 12:36 local (17:36 UTC)
- Place
- San Angelo, TX
- Injuries
- 3 minor
- Damage
- Substantial damage
- Phase of flight
- Approach
- Aircraft
- N6239GCessna 404
- Weather
- Visual (VMC) · Day
- Status
- Completed · report June 10, 1991
- Report
- Approved by Office Director
- Case key
- 23048
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.
On this page
Probable cause
Improper use of powerplant controls by the pilot-in-command (PIC). Factors related to the accident were: the pic's inadequate crew coordination, and the excessive airspeed and rate of descent that resulted, when the PIC maneuvered the aircraft back on course and glide path.
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
Fm 9500' MSL at 35 DME, coplt (SIC) bgn (hooded type) ILS rwy 3 apch with 14 to 22 kt tailwind. He planned not to EXCEED500'/MIN rate of dscnt to avoid supercooling engs. PIC rprtd acft was off course & abt 1500' hi as it apchd om. He took ctl & mnvrd acft on course & gp, then rtrnd ctl to SIC to cont ILS. Drg mnvr, 2500'/MIN dscnt occurred; spd incrd 31 kt. As apch contd, PIC extdd gear & flaps. As acft slowed & bgn settling, SIC advnd throttles, but engs didn't respond. PIC took ctl & both plts manipulated eng ctls, but pwr wasn't restored. Recallations differed; neither plt could recall eng inst indcns. Gear collapsed as acft ctcd gnd short of rwy & slid thru fence. Mix ctls were fnd abt 4 to 5 'clicks' aft of full fwd psn, throttles fnd at abt 3/4 fwd psn; abt 80 gal of fuel fnd in wing tanks. Inv revealed series of maint write-ups noting engs had run rich & rough, but no pre-acdnt part failure or malfunction was fnd. Engs opnly checked ok. Rear seat pax thought PIC pulled prop ctls 'down' & back fwd. Gnd witness rprtd sound as if 'prop reversers revved up.'
Aircraft
- Registration
- N6239G
- Reported as
- Cessna 404
- Category
- Airplane
- Serial number
- 404-0229
- Airframe hours
- 5,885
- Engine
- Continental GTSIO-520-M2, 375 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Public aircraft · Part 91
- Operator
- U.S. Customs
- Registered owner
- U.S. Customs
- Airworthiness certificate
- Standard, Normal
- Last inspection
- AAIP · July 3, 1990 · 13 hours before
- Departed
- SJT
- Destination
- SJT
- Flight plan
- Company VFR
- Airport
- SJI · Mathis Field, runway 3, 5,939 × 150 ft, asphalt
Flight crew
As NTSB recorded them. NTSB leaves out names.
- Role
- Pilot
- Age
- 33
- Certificate
- Commercial
- Airplane ratings
- Single-engine land, Multi-engine land
- Instrument ratings
- Helicopter, Airplane
- Medical
- Class 1, Valid Medical--no waivers/lim.
- Seat
- Left
- Flight hours
- 5,363 total · 169 in this make and model · 4,460 as pilot in command · 98 in the last 90 days · 27 in the last 30 days · 2 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 180° at 16 knots, gusting 24
- Visibility
- 20 statute miles
- Lowest ceiling
- 4,600 ft broken
- Temperature
- 86 °F, dew point 63 °F
- Altimeter
- 30.00 inHg
- Observed at
- SJT, 1 nm away