|37000 Feet||Browse and search NASA's
Aviation Safety Reporting System
|Local Time Of Day||1201 To 1800|
|Locale Reference||navaid : lal.vortac|
|Altitude||msl single value : 5000|
|Controlling Facilities||artcc : zjx.artcc|
|Operator||general aviation : personal|
|Make Model Name||Beechcraft Twin Turboprop Jet Undifferentiated or Other Model|
|Operating Under FAR Part||Part 91|
|Navigation In Use||other vortac|
|Route In Use||enroute airway : v159.airway|
|Function||flight crew : single pilot|
|Qualification||pilot : multi engine|
pilot : instrument
pilot : cfi
pilot : atp
|Experience||flight time last 90 days : 82|
flight time total : 9900
flight time type : 500
|Affiliation||government : faa|
|Function||controller : radar|
|Anomaly||altitude deviation : excursion from assigned altitude|
inflight encounter : weather
non adherence : clearance
non adherence : published procedure
other spatial deviation
|Independent Detector||other flight crewa|
While en route tmb after departure bhm I encountered isolated thunderstorms over or near lal VOR. I was on an IFR pilot plan when I was cleared from 13000 ft MSL to 5000 ft MSL in preparation for arrival at tmb. ATIS stated 2500 ft sct; 5000 ft sct; 25000 ft ovc; 7MI in rain. There was a cumulonimbus buildup directly in from of me. It looked benign. As I approached within a mile of this buildup several bolts of lightning emanated from this cloud. I called ATC as I deviated to the right and descended to 2000 ft MSL in VMC. ATC then; once the cell was cleared; gave us vectors to be back on course and back to 5000 ft MSL. I complied. The ILS was accomplished at tmb in rain with no further need to divert due the thunderstorms. ATC handled the diversion well.
Original NASA ASRS Text
Title: A BE56 PLT APCHING TBM ON AN ILS BREAKS OFF OF THE ILS BECAUSE OF TSTM ON FINAL AND DSNDS BELOW APCH ALT TO REMAIN CLR OF WX.
Narrative: WHILE ENRTE TMB AFTER DEP BHM I ENCOUNTERED ISOLATED THUNDERSTORMS OVER OR NEAR LAL VOR. I WAS ON AN IFR PLT PLAN WHEN I WAS CLRED FROM 13000 FT MSL TO 5000 FT MSL IN PREPARATION FOR ARR AT TMB. ATIS STATED 2500 FT SCT; 5000 FT SCT; 25000 FT OVC; 7MI IN RAIN. THERE WAS A CUMULONIMBUS BUILDUP DIRECTLY IN FROM OF ME. IT LOOKED BENIGN. AS I APCHED WITHIN A MILE OF THIS BUILDUP SEVERAL BOLTS OF LIGHTNING EMANATED FROM THIS CLOUD. I CALLED ATC AS I DEVIATED TO THE R AND DSNDED TO 2000 FT MSL IN VMC. ATC THEN; ONCE THE CELL WAS CLRED; GAVE US VECTORS TO BE BACK ON COURSE AND BACK TO 5000 FT MSL. I COMPLIED. THE ILS WAS ACCOMPLISHED AT TMB IN RAIN WITH NO FURTHER NEED TO DIVERT DUE THE THUNDERSTORMS. ATC HANDLED THE DIVERSION WELL.
Data retrieved from NASA's ASRS site as of January 2009 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.