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A B727 cargo hauler experiences a #2 engine compressor stall on final approach while IMC 10 mi northeast of tol, oh.
| Attributes | |
| ACN | 466005 |
| Time | |
| Date | 200003 |
| Day | Fri |
| Local Time Of Day | 0001 To 0600 |
| Place | |
| Locale Reference | airport : tol.airport |
| State Reference | OH |
| Altitude | msl bound lower : 3000 msl bound upper : 5000 |
| Environment | |
| Flight Conditions | IMC |
| Weather Elements | Ice |
| Aircraft 1 | |
| Controlling Facilities | tracon : tol.tracon artcc : zdv.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | B727 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | ils localizer & glide slope : 25 |
| Flight Phase | descent : approach |
| Route In Use | approach : instrument precision arrival : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : flight engineer pilot : atp |
| Experience | flight time last 90 days : 240 flight time total : 17500 flight time type : 5000 |
| ASRS Report | 466005 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : multi engine pilot : instrument pilot : commercial |
| Events | |
| Anomaly | aircraft equipment problem : critical inflight encounter other non adherence : company policies non adherence : published procedure |
| Independent Detector | other flight crewa other flight crewb other other : 3 |
| Resolutory Action | other |
| Consequence | other |
| Supplementary | |
| Problem Areas | Weather Aircraft Environmental Factor Flight Crew Human Performance |
| Primary Problem | Flight Crew Human Performance |
Narrative:
The problem arose while being radar vectored into the toledo, oh approach area. Temperature above the cloud layer indicated above 10 degrees. Flight release temperature indicated 4 degrees over -1 degree, actual ATIS WX indicated surface temperature of -1 degree. The contributing factor of this occurrence lies within the area of excessive step down clrncs followed by a speed reduction clearance to approach speed 5 mi outside the marker (hymli) for runway 25, toledo, oh. That speed was 143 KT for the aircraft's weight. The discovery was #2 engine compressor stall and visible icing had formed on the windshield wiper nut. Corrective action was taken by placing the engine anti-ice switch to the 'on' position, after the compressor stall had occurred. As for factors affecting the quality of human performance. This flight departed an airport with above normal temperatures and entered another airport area with above normal temperature for this type of year. Another reason is that although the captain has the responsibility for the safety of the aircraft operations, this aircraft has a compliment of 3 pilots who should have noticed the temperature drop prior to any ice accumulation.
Original NASA ASRS Text
Title: A B727 CARGO HAULER EXPERIENCES A #2 ENG COMPRESSOR STALL ON FINAL APCH WHILE IMC 10 MI NE OF TOL, OH.
Narrative: THE PROB AROSE WHILE BEING RADAR VECTORED INTO THE TOLEDO, OH APCH AREA. TEMP ABOVE THE CLOUD LAYER INDICATED ABOVE 10 DEGS. FLT RELEASE TEMP INDICATED 4 DEGS OVER -1 DEG, ACTUAL ATIS WX INDICATED SURFACE TEMP OF -1 DEG. THE CONTRIBUTING FACTOR OF THIS OCCURRENCE LIES WITHIN THE AREA OF EXCESSIVE STEP DOWN CLRNCS FOLLOWED BY A SPD REDUCTION CLRNC TO APCH SPD 5 MI OUTSIDE THE MARKER (HYMLI) FOR RWY 25, TOLEDO, OH. THAT SPD WAS 143 KT FOR THE ACFT'S WT. THE DISCOVERY WAS #2 ENG COMPRESSOR STALL AND VISIBLE ICING HAD FORMED ON THE WINDSHIELD WIPER NUT. CORRECTIVE ACTION WAS TAKEN BY PLACING THE ENG ANTI-ICE SWITCH TO THE 'ON' POS, AFTER THE COMPRESSOR STALL HAD OCCURRED. AS FOR FACTORS AFFECTING THE QUALITY OF HUMAN PERFORMANCE. THIS FLT DEPARTED AN ARPT WITH ABOVE NORMAL TEMPS AND ENTERED ANOTHER ARPT AREA WITH ABOVE NORMAL TEMP FOR THIS TYPE OF YEAR. ANOTHER REASON IS THAT ALTHOUGH THE CAPT HAS THE RESPONSIBILITY FOR THE SAFETY OF THE ACFT OPS, THIS ACFT HAS A COMPLIMENT OF 3 PLTS WHO SHOULD HAVE NOTICED THE TEMP DROP PRIOR TO ANY ICE ACCUMULATION.
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.