Engine Panel en el AFT Overhead Panel.

[jolmos]

What does the + sign mean for engine #1?

Edited October 8, 2023 by jolmos
Idiom

[Litjan]

These are indications of electrical connections behind the panel - if a section of light on a panel does not work, sometimes pushing on the + will make the lighing go on, then the technicians know that the connection is faulty (so I was told).

[jolmos]

Thank You so much, Litjan.