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Misread publication - air carrier used minimums for landing instead of minimums for alternate when they diverted.
| Attributes | |
| ACN | 298086 |
| Time | |
| Date | 199502 |
| Day | Thu |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : chs |
| State Reference | SC |
| Altitude | agl bound lower : 0 agl bound upper : 0 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : chs |
| Operator | common carrier : air carrier |
| Make Model Name | MD-88 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other |
| Flight Phase | descent : approach landing other other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | other personnel |
| Qualification | other |
| ASRS Report | 298086 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | aircraft equipment problem : less severe non adherence : published procedure non adherence : far other anomaly other |
| Independent Detector | other other : unspecified |
| Resolutory Action | none taken : detected after the fact |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Day/atl - diversion to chs. Flight released to atl using chs-sdf as alternates due fog at atl. MD88-CAT III equipment. Flight made 2 missed approachs at atl due to aircraft ILS receiver failure. Now CAT I aircraft and RVR atl variable 800-1000 ft. After second miss, called dispatch to advise of situation and request information on alternate if unable land atl on third try. I gave chs WX which was 300 ft broken, 3500 ft overcast, 5 mi visibility and time-burn figures. Considered bhm-mgm for diversion, but due to thunderstorms just west, did not use them. However, should not have used chs as it was below operations specifications limits, but mistakenly believed landing limits were governing. In retrospect, thunderstorms did not get to mgm as fast as I anticipated so should have used it. Confusion on my part reference alternate minimums I believe was a result of thinking in the 'ETOPS' mode where landing limits apply when en route. (Chs was above landing limits).
Original NASA ASRS Text
Title: MISREAD PUBLICATION - ACR USED MINIMUMS FOR LNDG INSTEAD OF MINIMUMS FOR ALTERNATE WHEN THEY DIVERTED.
Narrative: DAY/ATL - DIVERSION TO CHS. FLT RELEASED TO ATL USING CHS-SDF AS ALTERNATES DUE FOG AT ATL. MD88-CAT III EQUIP. FLT MADE 2 MISSED APCHS AT ATL DUE TO ACFT ILS RECEIVER FAILURE. NOW CAT I ACFT AND RVR ATL VARIABLE 800-1000 FT. AFTER SECOND MISS, CALLED DISPATCH TO ADVISE OF SIT AND REQUEST INFO ON ALTERNATE IF UNABLE LAND ATL ON THIRD TRY. I GAVE CHS WX WHICH WAS 300 FT BROKEN, 3500 FT OVCST, 5 MI VISIBILITY AND TIME-BURN FIGURES. CONSIDERED BHM-MGM FOR DIVERSION, BUT DUE TO TSTMS JUST W, DID NOT USE THEM. HOWEVER, SHOULD NOT HAVE USED CHS AS IT WAS BELOW OPS SPECS LIMITS, BUT MISTAKENLY BELIEVED LNDG LIMITS WERE GOVERNING. IN RETROSPECT, TSTMS DID NOT GET TO MGM AS FAST AS I ANTICIPATED SO SHOULD HAVE USED IT. CONFUSION ON MY PART REF ALTERNATE MINIMUMS I BELIEVE WAS A RESULT OF THINKING IN THE 'ETOPS' MODE WHERE LNDG LIMITS APPLY WHEN ENRTE. (CHS WAS ABOVE LNDG LIMITS).
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.