MD80 crew had high power compressor stalls just after takeoff.

Attributes
ACN	460536
Time
Date	200001
Day	Mon
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : ord.airport
State Reference	IL
Altitude	agl single value : 800
Environment
Light	Dusk
Aircraft 1
Controlling Facilities	tracon : c90.tracon
Operator	common carrier : air carrier
Make Model Name	MD-80 Super 80
Operating Under FAR Part	Part 121
Flight Phase	climbout : initial
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	460536
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
ASRS Report	460535
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	other flight crewa other flight crewb other flight crewb other other : 4
Consequence	other other
Supplementary
Problem Areas	Maintenance Human Performance Flight Crew Human Performance Company Aircraft
Primary Problem	Aircraft

Narrative:

Compressor stall after takeoff from chicago. Maximum power takeoff from runway 9R was interrupted with 2 subtle jolts at 800 ft AGL. Master caution and warning lights flashed briefly, but were unreadable. I disconnected the autothrottles and reduced power to 1.7 EPR. The aircraft climbed nicely at 1500 FPM. Continued climbing right turn to the west and cleared clouds at 10500 ft. With the anti-ice equipment turned off the aft flight attendants and a passenger riding captain agreed that there were different noises and a distinct vibration coming from the left engine. Called for technical assistance from air carrier maintenance who referred us to local maintenance and established a radio relay. Local maintenance recommended engine monitoring while continuing onward to reno. Remainder of flight and landing were unremarkable. Maintenance inspection revealed considerable damage to C-1 disk. 6 blades were bent forward at the tips. Supplemental information from acn 460535: on takeoff at 800 ft had 2 minor compressor stalls all engine readings were normal. Cabin crew and passenger rider air carrier captain said felt vibration from engines at high power settings, but reduced with lower power settings. Talked with maintenance. They recommended continuing to rno which we did to an uneventful landing. Inspection of engines showed 7 or 8 bent blades on #1 engine.

Original NASA ASRS Text

Title: MD80 CREW HAD HIGH PWR COMPRESSOR STALLS JUST AFTER TKOF.

Narrative: COMPRESSOR STALL AFTER TKOF FROM CHICAGO. MAX PWR TKOF FROM RWY 9R WAS INTERRUPTED WITH 2 SUBTLE JOLTS AT 800 FT AGL. MASTER CAUTION AND WARNING LIGHTS FLASHED BRIEFLY, BUT WERE UNREADABLE. I DISCONNECTED THE AUTOTHROTTLES AND REDUCED PWR TO 1.7 EPR. THE ACFT CLBED NICELY AT 1500 FPM. CONTINUED CLBING R TURN TO THE W AND CLRED CLOUDS AT 10500 FT. WITH THE ANTI-ICE EQUIP TURNED OFF THE AFT FLT ATTENDANTS AND A PAX RIDING CAPT AGREED THAT THERE WERE DIFFERENT NOISES AND A DISTINCT VIBRATION COMING FROM THE L ENG. CALLED FOR TECHNICAL ASSISTANCE FROM ACR MAINT WHO REFERRED US TO LCL MAINT AND ESTABLISHED A RADIO RELAY. LCL MAINT RECOMMENDED ENG MONITORING WHILE CONTINUING ONWARD TO RENO. REMAINDER OF FLT AND LNDG WERE UNREMARKABLE. MAINT INSPECTION REVEALED CONSIDERABLE DAMAGE TO C-1 DISK. 6 BLADES WERE BENT FORWARD AT THE TIPS. SUPPLEMENTAL INFO FROM ACN 460535: ON TKOF AT 800 FT HAD 2 MINOR COMPRESSOR STALLS ALL ENG READINGS WERE NORMAL. CABIN CREW AND PAX RIDER ACR CAPT SAID FELT VIBRATION FROM ENGS AT HIGH PWR SETTINGS, BUT REDUCED WITH LOWER PWR SETTINGS. TALKED WITH MAINT. THEY RECOMMENDED CONTINUING TO RNO WHICH WE DID TO AN UNEVENTFUL LNDG. INSPECTION OF ENGS SHOWED 7 OR 8 BENT BLADES ON #1 ENG.

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.