Under Pressure
It’s the operator applying the greatest pressure
Who has priority when applying the footbrakes?
This indication on the landing gear controller and the instrument panel show the landing gear is down and locked
What are the 3 green lights?
These have 2 pip pins and fitted in the plunger of the down locks
What are the main under carriage ground locks?
This indicates that the brake disc friction material is worn to the service limits
What does a flush wear indicator when the brakes are on indicate?
The Emergency Accumulator pressure can be checked using this page on the SPSD
What is the digital page?
This is indicated by a red light on the LG control panel
What indicates that the undercarriage leg is in transit or not locked down?
The nose landing gear ground lock equipment has this to prevent inadvertent operation of the drag strut changeover valve
What is the purpose of the small pip pin?
Releasing the parking brake inhibits this
What is castoring?
The emergency accumulator stores pressure for the parking brake and is charged by this
What is IHPS 3?
This indication is seen on the repeater panel with an emergency down selection
What is the EMERG DOWN indication?
This component can be visibly checked that is locked internally by a mechanical indicator pin extended from the lock microswitch housing
What is the Drag Strut?
These microswitches allow the UP selection of the landing gear
What are the leg extension microswitches?
You must inhibit hydraulic pressure form being applied to the No3 system and dissipate pressure for the emergency accumulator before disconnecting these
What are the wheel brake pipelines?
This status is shown on the landing gear controller and the repeater lights on the instrument panel
What is the landing gear positional status?
You need to check the ground locks are installed, emergency accumulator is fully charged and check the nosewheel steering lock is disengaged before carrying out this action
What do you need to do before towing aircraft?
You need to re-cycle the nose wheel steering circuit breaker on AC MAIN BUS 1 in the event of this
What do you do in the event of a nose wheel steering controller failure?