737NG Simple Fault / PSEU- MCS
A single fault in certain redundant systems, or some simple faults, do not illuminate the MASTER CAUTION and system annunciator lights.
a) What are Simple Faults?
b) Do we have two types of PSEU?
Type 1 PSEU
The PSEU light and OVERHEAD system annunciator do not illuminate for simple faults unless a system annunciator panel is pushed for recall. In this case, a simple fault, resetting the MASTER CAUTION system extinguishes the PSEU light.
Type 2
The PSEU light, OVERHEAD system annunciator and Master Caution illuminate automatically for simple faults, but only after a landing. The PSEU light extinguishes when a parking brake is set or when both engines are turned off
Last edited by B737NG_Pilot; 6th Sep 2013 at 10:17.