https://ad.easa.europa.eu/blob/NM-18-33.pdf/SIB_NM-18-33_1 https://ad.easa.europa.eu/blob/NM-18-33.pdf/SIB_NM-18-33_1 Here is the full SAIB on the Boeing fuel

https://ad.easa.europa.eu/blob/NM-18-33.pdf/SIB_NM-18-33_1 https://ad.easa.europa.eu/blob/NM-18-33.pdf/SIB_NM-18-33_1 Here is the full SAIB on the Boeing fuel control switches. This report lists the part 4TL837-3D as the switch used on 787s, and is the part mentioned in the preliminary report on the accident. The SAIB does single out the part 766AT613-3D, but that's for suggesting a replacement for it as 766AT614-3D. Per the Honeywell catalog for 4TL837-3D, if is a Snap Action toggle switch. The base model doesn't have a locking mechanism, which is available as an option