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NTSB Report
January 22, 1989 · Boeing 707-323B · N712PC
Salt Lake City, UT
Overview
Report Status
Probable Cause
Event Type
Incident
Date
January 22, 1989
Injury Outcomes
No injuries (194 uninjured)
Location
Salt Lake City, UT
Aircraft
Boeing 707-323B
Tail Number
N712PC
Injuries
None
Aircraft Damage
Minor
NTSB Number
DEN89IA067
PLT WAS EXECUTING CATEGORY I ILS APCH TO RWY 34L AFTER FLYING FROM HON TO SLC. PLT SAID HE 'CAME OFF GAUGES' AT 300 FT AGL EXPECTING TO SEE RWY BUT DIDN'T. AT 200 FT AGL, HE SAW RWY 150 FT TO LEFT BUT LOST ALL DEPTH PERCEPTION. PLT CONSIDERED EXECUTING MISSED APCH BUT FELT HE COULD ALIGN ACFT WITH RWY WITH ALT REMAINING. WHILE MANEUVERING, NO. 1 ENG STRUCK RWY, LEAVING 50-60 FT LONG, 1-INCH DEEP GOUGE. IN PREVIOUS 30 HR PERIOD, PLT HAD BEEN ON DUTY 18 HRS, 30 MIN, AND HAD FLOWN 13 HRS, 25 MIN. HE HAD BEEN OFF DUTY 11 HRS, 24 MIN, BUT HAD SLEPT ONLY 1 HR.
NTSB Probable Cause
THE PILOT-IN-COMMAND'S ATTEMPT TO ALIGN THE AIRPLANE WITH THE RUNWAY AT AN ALTITUDE INSUFFICIENT FOR SAFE MANEUVERING, RESULTING IN THE NO. 1 ENGINE STRIKING THE RUNWAY. CONTRIBUTING FACTORS INCLUDE OBSCURED VISIBILITY DUE TO FOG, THE CAPTAIN'S LOSS OF DEPTH PERCEPTION, AND PILOT FATIGUE DUE TO DISRUPTED CIRCADIAN RHYTHM.
Full Narrative
PLT WAS EXECUTING CATEGORY I ILS APCH TO RWY 34L AFTER FLYING FROM HON TO SLC. PLT SAID HE 'CAME OFF GAUGES' AT 300 FT AGL EXPECTING TO SEE RWY BUT DIDN'T. AT 200 FT AGL, HE SAW RWY 150 FT TO LEFT BUT LOST ALL DEPTH PERCEPTION. PLT CONSIDERED EXECUTING MISSED APCH BUT FELT HE COULD ALIGN ACFT WITH RWY WITH ALT REMAINING. WHILE MANEUVERING, NO. 1 ENG STRUCK RWY, LEAVING 50-60 FT LONG, 1-INCH DEEP GOUGE. IN PREVIOUS 30 HR PERIOD, PLT HAD BEEN ON DUTY 18 HRS, 30 MIN, AND HAD FLOWN 13 HRS, 25 MIN. HE HAD BEEN OFF DUTY 11 HRS, 24 MIN, BUT HAD SLEPT ONLY 1 HR.
Flight
Event TypeIncident
Event Time09:49 MST
Nearest AirportSalt Lake City (0nm N)
Runway34L
Runway Length12003 ft
Runway Width150 ft
Flight Plan FiledIFR
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftBoeing 707-323B
Tail NumberN712PC
Aircraft CategoryAir
DamageMinor
Operating RulePart 121
Engines4
Engine TypeTurbofan
Engine DetailsP&W · JT3D-38 · Turbofan · 18000
Seats194
People & Injuries
Injury SummaryNo injuries (194 uninjured)
Fatal0
Serious0
Minor0
Uninjured194
Total194
Crew 1Age 56 · First Class
Conditions
ConditionsIMC
LightDaylight
Wind350° @ 6 kt
CeilingOvercast 25000 ft
Temperature / Dew Point23 C / 21 C
Altimeter29.00 inHg
Observation Time16:51
Weather SourceWFAC