B737起落架常见故障

英文版的有很详细的常见问题极其解决办法的，都是手册里的，很大，发不过去下面是2个常见问题
NOSE GEAR EXTENSION AND RETRACTION - TROUBLE SHOOTING
1. General
A. This procedure has these observed fault trouble shooting tasks:
(1) While in the Air:
(a) Nose Landing Gear fails to operate, or does not operate correctly.
(b) Nose Landing Gear enters Locked position with excessive force.
(2) While on the ground:
(a) The Airplane is on the Ground and the Red Warning Light for the Nose Landing Gear is
Illuminated. The Landing Gear Control Lever is in the DN position.
B. Trouble shooting the nose gear retraction mechanism requires the airplane to be jacked for nose
gear retraction per (PAGEBLOCK 07-11-11/201).
NOTE: Be careful to not remove the chocks or do other actions that can cause the nose landing
gear to inadvertently retract before the weight of the airplane is supported by the jack.
C. Hydraulic power from a variable flow hydraulic bench, or from the airplane hy