DC9-30 flight crew has low right engine N1 on takeoff roll. Takeoff aborted.

Attributes
ACN	328330
Time
Date	199602
Day	Sat
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : phl
State Reference	PA
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	climbout : takeoff other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : flight engineer pilot : atp pilot : cfi
Experience	flight time last 90 days : 400 flight time total : 15000 flight time type : 8600
ASRS Report	328330
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	aircraft equipment problem : less severe other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	other
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

During takeoff roll both throttles set full takeoff EPR 2.01. Noticed left throttle advanced more than right. Right N1 only 80 percent (88 percent minimum acceptance). Rejected takeoff at 100 KTS. Taxied back to gate. Maintenance found right engine probe blocked. Cleared probe, normal takeoff.

Original NASA ASRS Text

Title: DC9-30 FLC HAS LOW R ENG N1 ON TKOF ROLL. TKOF ABORTED.

Narrative: DURING TKOF ROLL BOTH THROTTLES SET FULL TKOF EPR 2.01. NOTICED L THROTTLE ADVANCED MORE THAN R. R N1 ONLY 80 PERCENT (88 PERCENT MINIMUM ACCEPTANCE). REJECTED TKOF AT 100 KTS. TAXIED BACK TO GATE. MAINT FOUND R ENG PROBE BLOCKED. CLRED PROBE, NORMAL TKOF.

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.