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-   -   B777 dispatch with inop fuel tank quantity indications (https://www.pprune.org/tech-log/652753-b777-dispatch-inop-fuel-tank-quantity-indications.html)

Cropduster 15th May 2023 22:45
B777 dispatch with inop fuel tank quantity indications
 
Q: The B777 allows for dispatch under certain conditions with a main fuel tank quantity indication inop. But the fuel leak checklist in the QRH requires you to compare L & R tank quantities , which you obviously can’t do. Is there some other way to manage a suspected fuel leak or is the MEL predicated on “risk management” and if you happen to have a fuel leak with this MEL, it just isn’t your day?

oceancrosser 15th May 2023 23:10
Originally Posted by Cropduster (Post 11435352)
Q: The B777 allows for dispatch under certain conditions with a main fuel tank quantity indication inop. But the fuel leak checklist in the QRH requires you to compare L & R tank quantities , which you obviously can’t do. Is there some other way to manage a suspected fuel leak or is the MEL predicated on “risk management” and if you happen to have a fuel leak with this MEL, it just isn’t your day?
Don´t fly the 777, but looking at the (identical) MEL restrictions and QRH checklists for the 757/767 which have the same fuel tank arrangement, look at the (O) Operational procedure in the MEL. It details pretty much what to do at least for the 757/767. And it is a non-ETOPS item.

Cropduster 16th May 2023 05:09
Oceancrosser…
don’t have access to the 57/67 MEL. In a nutshell, what is the procedure?
Thx.


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