Narrative:

During start of rolling takeoff runway 27R atl at approximately 70 KTS, heard a pop, felt the aircraft shudder and saw a flash of light through the copilot's window. I aborted the takeoff and stopped the aircraft on the runway. After comparing engine instruments, #2 engine showed approximately 5 percent less N1 and N2 RPM than engine #1. The engine was shut down. We asked tower to dispatch a vehicle to do an exterior inspection of the aircraft and to check the inflation of our tires. We were informed by the vehicle that numerous metal fragments were on the runway behind the aircraft on the right side. Initially we had difficulty reaching maintenance on the radio so we went through company dispatch and were finally able to get in contact with them. After reporting the results of the vehicle inspection and conferring on a course of action, we elected to taxi the aircraft back to the departure gate. We communicated several times with flight attendants and passenger to keep them informed. Everyone seemed to remain calm and took the events in stride. I went back to the cabin to do a cursory visual inspection of the engine after smoke was reported coming from it after shutdown. Smoke was probably the result of oil on the tailpipe due to internal damage. Flight attendants did an excellent job in keeping the passenger reassured and forwarding information to us. First officer offered several valid suggestions in working around radio communication difficulties. This was an excellent lesson on the importance of a good abort plan. We were fortunate that the failure didn't occur during liftoff. Callback conversation with reporter revealed the following information: verified aircraft type as B737-200 and engine model JT8D-15A. No new information was available to reporter.

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Original NASA ASRS Text

Title: UNCONTAINED ENG FAILURE DURING TKOF ROLL. METAL FRAGMENTS WERE EJECTED OUT OF THE ENG. FLC ABORTED TKOF AND RETURNED TO GATE AFTER VISUAL INSPECTION BY GND PERSONNEL.

Narrative: DURING START OF ROLLING TKOF RWY 27R ATL AT APPROX 70 KTS, HEARD A POP, FELT THE ACFT SHUDDER AND SAW A FLASH OF LIGHT THROUGH THE COPLT'S WINDOW. I ABORTED THE TKOF AND STOPPED THE ACFT ON THE RWY. AFTER COMPARING ENG INSTS, #2 ENG SHOWED APPROX 5 PERCENT LESS N1 AND N2 RPM THAN ENG #1. THE ENG WAS SHUT DOWN. WE ASKED TWR TO DISPATCH A VEHICLE TO DO AN EXTERIOR INSPECTION OF THE ACFT AND TO CHK THE INFLATION OF OUR TIRES. WE WERE INFORMED BY THE VEHICLE THAT NUMEROUS METAL FRAGMENTS WERE ON THE RWY BEHIND THE ACFT ON THE R SIDE. INITIALLY WE HAD DIFFICULTY REACHING MAINT ON THE RADIO SO WE WENT THROUGH COMPANY DISPATCH AND WERE FINALLY ABLE TO GET IN CONTACT WITH THEM. AFTER RPTING THE RESULTS OF THE VEHICLE INSPECTION AND CONFERRING ON A COURSE OF ACTION, WE ELECTED TO TAXI THE ACFT BACK TO THE DEP GATE. WE COMMUNICATED SEVERAL TIMES WITH FLT ATTENDANTS AND PAX TO KEEP THEM INFORMED. EVERYONE SEEMED TO REMAIN CALM AND TOOK THE EVENTS IN STRIDE. I WENT BACK TO THE CABIN TO DO A CURSORY VISUAL INSPECTION OF THE ENG AFTER SMOKE WAS RPTED COMING FROM IT AFTER SHUTDOWN. SMOKE WAS PROBABLY THE RESULT OF OIL ON THE TAILPIPE DUE TO INTERNAL DAMAGE. FLT ATTENDANTS DID AN EXCELLENT JOB IN KEEPING THE PAX REASSURED AND FORWARDING INFO TO US. FO OFFERED SEVERAL VALID SUGGESTIONS IN WORKING AROUND RADIO COM DIFFICULTIES. THIS WAS AN EXCELLENT LESSON ON THE IMPORTANCE OF A GOOD ABORT PLAN. WE WERE FORTUNATE THAT THE FAILURE DIDN'T OCCUR DURING LIFTOFF. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: VERIFIED ACFT TYPE AS B737-200 AND ENG MODEL JT8D-15A. NO NEW INFO WAS AVAILABLE TO RPTR.

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.