 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
A cpr small transport stalled when trying to climb too high.
| Attributes | |
| ACN | 282950 |
| Time | |
| Date | 199409 |
| Day | Fri |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : bhm |
| State Reference | AL |
| Altitude | msl bound lower : 22000 msl bound upper : 23900 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : ztl |
| Operator | general aviation : corporate |
| Make Model Name | King Air 100 A/B |
| Operating Under FAR Part | Part 91 |
| Flight Phase | climbout : intermediate altitude cruise other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | Other |
| Function | flight crew : single pilot |
| Qualification | pilot : commercial pilot : instrument |
| Experience | flight time last 90 days : 80 flight time total : 9000 flight time type : 1500 |
| ASRS Report | 282950 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Events | |
| Anomaly | inflight encounter other non adherence : clearance other anomaly other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Resolutory Action | controller : issued new clearance none taken : anomaly accepted other |
| Consequence | faa : reviewed incident with flight crew |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
While level at FL220 awaiting clearance to FL240 in order to top columbus MOA, I was picking up rime ice and asked to begin climb to FL240 hoping to get back in sunshine. Was cleared to FL230 which was no problem and out of ice accumulation. Seemed to be almost on top. Was handed off to high altitude controller and cleared to maintain FL240. I started the climb at approximately 500 FPM indicating 140 KIAS. At 23900 ft I felt stall buffet and immediately lowered the nose. Was indicating 130 KIAS at that time. By the time stall recovery was completed, I was at 23500 ft and I advised the controller that I had to descend. He admonished me that I should first tell him. I advised him that I had no choice at the time and was climbing back to FL240. Again at 23900 ft, 130 KIAS the same thing happened. I advised the controller. He told me to maintain FL230 and contact a different controller for routing around MDA. I can only assume that the stall occurred due to ice buildup on the bottom of the wing. Visible ice on the leading edge was no more than 1/4 inch, not enough for boots to break. I had no problem maintaining FL220 or 230 for that matter and normal indicated airspeed for the BE100. And I thought I was always aware of ice accumulation. My practice has been when in any ice and I lose 5 KTS airspeed in level flight start looking for out. Be more aware of ice buildup beneath the wing.
Original NASA ASRS Text
Title: A CPR SMT STALLED WHEN TRYING TO CLB TOO HIGH.
Narrative: WHILE LEVEL AT FL220 AWAITING CLRNC TO FL240 IN ORDER TO TOP COLUMBUS MOA, I WAS PICKING UP RIME ICE AND ASKED TO BEGIN CLB TO FL240 HOPING TO GET BACK IN SUNSHINE. WAS CLRED TO FL230 WHICH WAS NO PROB AND OUT OF ICE ACCUMULATION. SEEMED TO BE ALMOST ON TOP. WAS HANDED OFF TO HIGH ALT CTLR AND CLRED TO MAINTAIN FL240. I STARTED THE CLB AT APPROX 500 FPM INDICATING 140 KIAS. AT 23900 FT I FELT STALL BUFFET AND IMMEDIATELY LOWERED THE NOSE. WAS INDICATING 130 KIAS AT THAT TIME. BY THE TIME STALL RECOVERY WAS COMPLETED, I WAS AT 23500 FT AND I ADVISED THE CTLR THAT I HAD TO DSND. HE ADMONISHED ME THAT I SHOULD FIRST TELL HIM. I ADVISED HIM THAT I HAD NO CHOICE AT THE TIME AND WAS CLBING BACK TO FL240. AGAIN AT 23900 FT, 130 KIAS THE SAME THING HAPPENED. I ADVISED THE CTLR. HE TOLD ME TO MAINTAIN FL230 AND CONTACT A DIFFERENT CTLR FOR ROUTING AROUND MDA. I CAN ONLY ASSUME THAT THE STALL OCCURRED DUE TO ICE BUILDUP ON THE BOTTOM OF THE WING. VISIBLE ICE ON THE LEADING EDGE WAS NO MORE THAN 1/4 INCH, NOT ENOUGH FOR BOOTS TO BREAK. I HAD NO PROB MAINTAINING FL220 OR 230 FOR THAT MATTER AND NORMAL INDICATED AIRSPD FOR THE BE100. AND I THOUGHT I WAS ALWAYS AWARE OF ICE ACCUMULATION. MY PRACTICE HAS BEEN WHEN IN ANY ICE AND I LOSE 5 KTS AIRSPD IN LEVEL FLT START LOOKING FOR OUT. BE MORE AWARE OF ICE BUILDUP BENEATH THE WING.
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.