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The PIC of a B757 has a high, erratic EPR reading on 1 engine, declared an emergency and asks for special handling from ZSU prior to landing at tjsj, pr.
| Attributes | |
| ACN | 534822 |
| Time | |
| Date | 200201 |
| Day | Wed |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | navaid : coy.vor |
| State Reference | VI |
| Altitude | msl single value : 18000 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zsu.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | B757 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other other vortac |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| ASRS Report | 534822 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Events | |
| Anomaly | aircraft equipment problem : critical |
| Independent Detector | aircraft equipment other aircraft equipment : epr ind other flight crewa |
| Resolutory Action | controller : provided flight assist flight crew : declared emergency flight crew : landed in emergency condition other |
| Consequence | faa : reviewed incident with flight crew other other |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance Aircraft |
| Primary Problem | Aircraft |
Narrative:
Location: coy. Passing FL180 for FL250, left engine EPR indications became erratically high. Left throttle retarded on its own to maintain commanded climb EPR setting while all other engine indications were essentially matched with right engine. Disconnected autothrottles and began to analyze condition. Declared emergency with ZSU, asking for vectors north of airport to hold until ready for landing. Notified flight attendants to prepare for emergency landing up to briefing passenger and notified passenger of situation. Obtained patch with dispatch and company maintenance and troubleshot engine eec's with no resolution to condition. Notified flight attendants and passenger of expected normal landing procedure. Requested vectors for straight-in runway 8 sju and made normal flaps 25 degree landing with no reverse. Later maintenance determined left EPR transmitter was at fault.
Original NASA ASRS Text
Title: THE PIC OF A B757 HAS A HIGH, ERRATIC EPR READING ON 1 ENG, DECLARED AN EMER AND ASKS FOR SPECIAL HANDLING FROM ZSU PRIOR TO LNDG AT TJSJ, PR.
Narrative: LOCATION: COY. PASSING FL180 FOR FL250, L ENG EPR INDICATIONS BECAME ERRATICALLY HIGH. L THROTTLE RETARDED ON ITS OWN TO MAINTAIN COMMANDED CLB EPR SETTING WHILE ALL OTHER ENG INDICATIONS WERE ESSENTIALLY MATCHED WITH R ENG. DISCONNECTED AUTOTHROTTLES AND BEGAN TO ANALYZE CONDITION. DECLARED EMER WITH ZSU, ASKING FOR VECTORS N OF ARPT TO HOLD UNTIL READY FOR LNDG. NOTIFIED FLT ATTENDANTS TO PREPARE FOR EMER LNDG UP TO BRIEFING PAX AND NOTIFIED PAX OF SIT. OBTAINED PATCH WITH DISPATCH AND COMPANY MAINT AND TROUBLESHOT ENG EEC'S WITH NO RESOLUTION TO CONDITION. NOTIFIED FLT ATTENDANTS AND PAX OF EXPECTED NORMAL LNDG PROC. REQUESTED VECTORS FOR STRAIGHT-IN RWY 8 SJU AND MADE NORMAL FLAPS 25 DEG LNDG WITH NO REVERSE. LATER MAINT DETERMINED L EPR XMITTER WAS AT FAULT.
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.