|37000 Feet||Browse and search NASA's
Aviation Safety Reporting System
|Local Time Of Day||0601 To 1200|
|Altitude||msl bound lower : 39300|
msl bound upper : 40000
|Controlling Facilities||artcc : zab.artcc|
|Operator||general aviation : personal|
|Make Model Name||Rockwell North American Undifferentiated or Other Model|
|Operating Under FAR Part||Part 91|
|Flight Phase||climbout : vacating altitude|
|Function||flight crew : single pilot|
|Experience||flight time last 90 days : 25|
flight time total : 3420
flight time type : 190
|Affiliation||government : faa|
|Function||controller : radar|
|Anomaly||aircraft equipment problem : critical|
altitude deviation : excursion from assigned altitude
other anomaly other
|Independent Detector||other flight crewa|
|Resolutory Action||flight crew : overcame equipment problem|
flight crew : returned to assigned altitude
Flight Crew Human Performance
While on a maintenance flight to the filed block altitude FL490-FL510, I was cleared under radar vector heading 240 degrees from FL350 to assigned block altitude. At FL380, I called center and asked when reaching FL400 if I could have a direct heading to deming. A controller cleared me right turn direct deming passing FL400. Approximately 1/2 way through the turn, I was at FL405 and encountered drag from a r-hand slat deployment. Aircraft descended to FL393 before controller's call. Thereafter, rolled out, lit the afterburner, and climbed to assigned block level. While dealing with the extended slat, the particular problem caused altitude loss, with wings level aircraft performed per the book. Slat problem has been attended to by maintenance.
Original NASA ASRS Text
Title: AN F100 CLRED TO FL400 EXPERIENCED 700 FT ALTDEV DUE TO R SLAT DEPLOYMENT.
Narrative: WHILE ON A MAINT FLT TO THE FILED BLOCK ALT FL490-FL510, I WAS CLRED UNDER RADAR VECTOR HDG 240 DEGS FROM FL350 TO ASSIGNED BLOCK ALT. AT FL380, I CALLED CTR AND ASKED WHEN REACHING FL400 IF I COULD HAVE A DIRECT HDG TO DEMING. A CTLR CLRED ME R TURN DIRECT DEMING PASSING FL400. APPROX 1/2 WAY THROUGH THE TURN, I WAS AT FL405 AND ENCOUNTERED DRAG FROM A R-HAND SLAT DEPLOYMENT. ACFT DSNDED TO FL393 BEFORE CTLR'S CALL. THEREAFTER, ROLLED OUT, LIT THE AFTERBURNER, AND CLBED TO ASSIGNED BLOCK LEVEL. WHILE DEALING WITH THE EXTENDED SLAT, THE PARTICULAR PROB CAUSED ALT LOSS, WITH WINGS LEVEL ACFT PERFORMED PER THE BOOK. SLAT PROB HAS BEEN ATTENDED TO BY MAINT.
Data retrieved from NASA's ASRS site as of July 2007 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.