A B737NG flight crew rejected their takeoff 20 KTS below V1 when they received a bleed trip off ligh...

Narrative:

The right 'bleed trip off' light illuminated approximately 20 seconds into takeoff roll. I rejected the takeoff. On the previous flight the same light had illuminated during climb through 27;000 ft and remained illuminated for the duration of the return flight. After our return; maintenance replaced a sensor; followed by a five minute run-up test at 80% N1. When the light returned during the subsequent takeoff roll I was concerned that it could be caused by a more serious threat of uncontained hot; high pressure bleed air and would be safer handled on the ground. I aborted the takeoff when the light illuminated 20 KTS below V1. Total runway used from the start of the roll to rejected takeoff stop: 4;500 ft. Runway remaining after rejected takeoff: 7;500 ft.

Original NASA ASRS Text

Title: A B737NG flight crew rejected their takeoff 20 KTS below V1 when they received a Bleed Trip Off light. Maintenance had just been performed on the bleed system following a turnback due to the light illuminating late in the previous departure climbout.

Narrative: The Right 'Bleed Trip Off' light illuminated approximately 20 seconds into takeoff roll. I rejected the takeoff. On the previous flight the same light had illuminated during climb through 27;000 FT and remained illuminated for the duration of the return flight. After our return; Maintenance replaced a sensor; followed by a five minute run-up test at 80% N1. When the light returned during the subsequent takeoff roll I was concerned that it could be caused by a more serious threat of uncontained HOT; HIGH pressure bleed air and would be safer handled on the ground. I aborted the takeoff when the light illuminated 20 KTS below V1. Total runway used from the start of the roll to RTO stop: 4;500 FT. Runway remaining after RTO: 7;500 FT.

Data retrieved from NASA's ASRS site as of April 2012 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.

Attributes
ACN	971302
Time
Date	201109
Local Time Of Day	0001-0600
Place
Locale Reference	ZZZ.Airport
State Reference	US
Aircraft 1
Make Model Name	B737-800
Operating Under FAR Part	Part 121
Flight Phase	Takeoff
Flight Plan	IFR
Component
Aircraft Component	Pneumatic System
Person 1
Function	Captain Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Aircraft Equipment Problem Critical

A B737NG flight crew rejected their takeoff 20 KTS below V1 when they received a bleed trip off light. Maintenance had just been performed on the bleed system following a turnback due to the light illuminating late in the previous departure climbout.