Narrative:

On takeoff runway 1R while performing IOE to first officer, we rejected takeoff for what we both thought to be a left high pressure shutoff valve EICAS warning at 40 KTS. Cleared runway and addressed all issues. Worked with maintenance and he advised how to check valve. Did runup and all seemed ok. Second takeoff rejected for right high pressure shutoff valve. Returned to gate. We were both convinced that the initial reject was for a left valve problem, but mechanic told us fault reader showed both on right. In retrospect, we should have run both engines to diagnose. EICAS and valve light went out as soon as power was reduced, so we obviously misinterped engine.

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Original NASA ASRS Text

Title: A B767 PIC REJECTS HIS TKOF 2 TIMES AFTER RECEIVING 2 SUCCESSIVE EICAS WARNINGS OF A HIGH PRESSURE SHUTOFF VALVE PROB ON HIS 2 TKOF ATTEMPTS AT SFO, CA.

Narrative: ON TKOF RWY 1R WHILE PERFORMING IOE TO FO, WE REJECTED TKOF FOR WHAT WE BOTH THOUGHT TO BE A L HIGH PRESSURE SHUTOFF VALVE EICAS WARNING AT 40 KTS. CLRED RWY AND ADDRESSED ALL ISSUES. WORKED WITH MAINT AND HE ADVISED HOW TO CHK VALVE. DID RUNUP AND ALL SEEMED OK. SECOND TKOF REJECTED FOR R HIGH PRESSURE SHUTOFF VALVE. RETURNED TO GATE. WE WERE BOTH CONVINCED THAT THE INITIAL REJECT WAS FOR A L VALVE PROB, BUT MECH TOLD US FAULT READER SHOWED BOTH ON R. IN RETROSPECT, WE SHOULD HAVE RUN BOTH ENGS TO DIAGNOSE. EICAS AND VALVE LIGHT WENT OUT AS SOON AS PWR WAS REDUCED, SO WE OBVIOUSLY MISINTERPED 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.