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Captain reports that information in their erj-190 MEL is inadequate; incomplete and did not indicate the aircraft's CAT-2/CAT-3 would be downgraded with the deferral of tat-1. The first officer's mfd-2 had also been deferred and was suppose to be the source selected for the tat-1 deferral; but was not viewable.
| Attributes | |
| ACN | 1100626 |
| Time | |
| Date | 201307 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Light | Dusk |
| Aircraft 1 | |
| Make Model Name | EMB ERJ 190/195 ER/LR |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Takeoff |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Minimum Equipment List (MEL) |
| Person 1 | |
| Function | Captain Pilot Not Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical |
Narrative:
This erj-190 aircraft had two mels: tat-1 fail and mfd-2 inoperative. First of all; the information in the MEL is inadequate and incomplete regarding the tat-1 fail as follows: ...CAT status is degraded due to the requirement that the source be selected to first officer's side as per the MEL; but is required to be selected to the captain's side per our autoland procedure; but no mention of this in the MEL. On every leg we had autothrust fail at 1;500 ft which I strongly suspect is due to the tat-1 being inoperative; but no mention of it in the MEL. Various VNAV performance calculations [were] unavailable on captain's side but no mention of it in the MEL. And even more importantly; dispatching with the mfd-2 inoperative made it especially difficult since various VNAV capabilities were compromised on the captain's side. MEL needs to be corrected. Dispatching with multiple mels is a bad idea to begin with; and particularly with these two.
Original NASA ASRS Text
Title: Captain reports that information in their ERJ-190 MEL is inadequate; incomplete and did not indicate the aircraft's CAT-2/CAT-3 would be downgraded with the deferral of TAT-1. The First Officer's MFD-2 had also been deferred and was suppose to be the source selected for the TAT-1 deferral; but was not viewable.
Narrative: This ERJ-190 aircraft had two MELs: TAT-1 Fail and MFD-2 inoperative. First of all; the information in the MEL is inadequate and incomplete regarding the TAT-1 fail as follows: ...CAT status is degraded due to the requirement that the source be selected to First Officer's side as per the MEL; but is required to be selected to the Captain's side per our autoland procedure; but no mention of this in the MEL. On every leg we had autothrust fail at 1;500 FT which I strongly suspect is due to the TAT-1 being inoperative; but no mention of it in the MEL. Various VNAV performance calculations [were] unavailable on Captain's side but no mention of it in the MEL. And even more importantly; dispatching with the MFD-2 inoperative made it especially difficult since various VNAV capabilities were compromised on the Captain's side. MEL needs to be corrected. Dispatching with multiple MELs is a bad idea to begin with; and particularly with these two.
Data retrieved from NASA's ASRS site as of July 2013 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.