Accident Learjet 25D XA-ROZ, Wednesday 25 April 1990

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Date:	Wednesday 25 April 1990
Time:	21:55 LT
Type:	Learjet 25D
Owner/operator:	Internacionales De Torreon
Registration:	XA-ROZ
MSN:	286
Total airframe hrs:	2953 hours
Engine model:	GE CJ610-8A
Fatalities:	Fatalities: 0 / Occupants: 9
Other fatalities:	0
Aircraft damage:	Substantial
Category:	Accident
Location:	Uvalde, TX - United States of America
Phase:	En route
Nature:	Executive
Departure airport:	Lubbock, TX (KLBB)
Destination airport:	(MMTC)
Investigating agency:	NTSB
Confidence Rating:	Accident investigation report completed and information captured

Narrative:
THE FLT CREW ENCTRD SVR TURBC IN CRUISE FLT AT FL410, OVER A VIP LVL 4 TO 5 THUNDERSTORM. THE #2 ENG FLAMED OUT, THOUGH CONTINUOUS IGNITION HAD BEEN SELECTED. AFTER THE FLAME-OUT, THE ACFT STARTED TO DSCND & THE CREW BGN TO DIVERT TO A NRBY ARPT. DRG THE DSCNT, THE ACFT ENCTRD LARGE HAIL, HVY RAIN, SVR TURBC, LIGHTNING & ST ELMOS FIRE. THE OTR ENG FLAMED OUT AS THE ACFT WAS DSCNDG THRU FL330 (PRESUMABLY DUE TO HAIL & WATER INGESTION). ATTEMPTED AIR STARTS (BOTH WINDMILLING & STARTER ASSISTED) WERE UNSUCCESSFUL; INTERIOR LGTS BCM EXTREMELY DIM DRG STARTER ASSISTED ATMTS. SUBSEQUENTLY, THE ACFT WAS DMGD DRG A LNDG IN A WHEAT FLD. INV REVEALED THE CREW DID NOT RCV A WX BRIEFING BFR THE FLT. THERE WAS A CONVECTIVE SIGMET (6C) & AN ALERT WX WARNING (AWW 163), WHICH WERE ACTIVE FOR THE AREA. ACCORDING TO A WX STUDY, THERE WAS A SVR THUNDERSTORM, TOPPED AT OR NR FL410, MDT TO SVR UP/DWNDFTS, LARGE HAIL, HVY RAIN, STRONG WIND GUSTS, AND AIRFRAME ICING ABV 12,000' MSL. ALL FRONTAL AREAS OF THE ACFT RCVD MDT TO SVR HAIL DMG.

Probable Cause: FAILURE OF THE PILOT TO OBTAIN A PRE-FLIGHT WEATHER BRIEFING, AND HIS IMPROPER IN-FLIGHT PLANNING/DECISION, WHICH RESULTED IN AN IN-FLIGHT ENCOUNTER WITH SEVERE WEATHER AND SUBSEQUENT ENGINE FLAMEOUTS. FACTORS RELATED TO THE ACCIDENT WERE: DARKNESS, THE SEVERE WEATHER CONDITIONS, AND ROUGH/UNEVEN TERRAIN IN THE FORCED LANDING AREA.

Accident investigation: