<< >> NASA ASRS Report 352040, November 1996

Super MD80 maintaining FL330 encountered moderate turbulence 50 mi northeast ink. Attempted to climb above WX and encountered stall buffet. Went to maximum power, firewall, resulted in engine surging and sporadic stall. Descended to FL290 -- all engine indications normal. Wrote up both engines on arrival iah.

Attributes
ACN	352040
Time
Date	199611
Day	Wed
Local Time Of Day	1801 To 2400
Place
Locale Reference	atc facility : ink
State Reference	TX
Altitude	msl bound lower : 33000 msl bound upper : 33000
Environment
Flight Conditions	Mixed
Light	Night
Aircraft 1
Controlling Facilities	artcc : zfw
Operator	common carrier : air carrier
Make Model Name	MD-80 Super 80
Operating Under FAR Part	Part 121
Navigation In Use	Other
Flight Phase	cruise other
Route In Use	enroute : direct
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	352040
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	inflight encounter : weather other anomaly other
Independent Detector	other flight crewa
Resolutory Action	flight crew : exited adverse environment
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

East of wink and west of tuscola, approached a large frontal boundary at FL330, 250 KIAS, first officer flying. Appeared to be above all precipitation and lightning. Encountered moderate turbulence and initiated a climb for smooth air. Airspeed decayed, more power applied. Unable to climb, began to descend with airspeed still decaying. Maximum power, firewall, applied to preclude sinking into worse turbulence. Sporadic stall and engine surges evident. Descended to FL290, speed increased, power reduced, all engine indications normal. Landed at iah. Wrote up both engines.

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Original NASA ASRS Text

Title: SUPER MD80 MAINTAINING FL330 ENCOUNTERED MODERATE TURB 50 MI NE INK. ATTEMPTED TO CLB ABOVE WX AND ENCOUNTERED STALL BUFFET. WENT TO MAX PWR, FIREWALL, RESULTED IN ENG SURGING AND SPORADIC STALL. DSNDED TO FL290 -- ALL ENG INDICATIONS NORMAL. WROTE UP BOTH ENGS ON ARR IAH.

Narrative: E OF WINK AND W OF TUSCOLA, APCHED A LARGE FRONTAL BOUNDARY AT FL330, 250 KIAS, FO FLYING. APPEARED TO BE ABOVE ALL PRECIP AND LIGHTNING. ENCOUNTERED MODERATE TURB AND INITIATED A CLB FOR SMOOTH AIR. AIRSPD DECAYED, MORE PWR APPLIED. UNABLE TO CLB, BEGAN TO DSND WITH AIRSPD STILL DECAYING. MAX PWR, FIREWALL, APPLIED TO PRECLUDE SINKING INTO WORSE TURB. SPORADIC STALL AND ENG SURGES EVIDENT. DSNDED TO FL290, SPD INCREASED, PWR REDUCED, ALL ENG INDICATIONS NORMAL. LANDED AT IAH. WROTE UP BOTH ENGS.

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.