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 hydraulic system may be
used. With the airplane system in use, gear operation times and hydraulic pressure will be near
normal.
D. Three persons are required. One stationed in control cabin to operate the landing gear control lever,
one to operate the hydraulic test bench (if used) and one stationed near the nose wheel well to
observe gear action.
E. Main gear ground lock assemblies must be installed (PAGEBLOCK 32-00-01/201), control cables
correctly rigged and hydraulic reservoirs filled to correct level.
WARNING: CHECK THAT GROUND LOCK ASSEMBLIES ARE INSTALLED IN MAIN LANDING
GEAR TO PREVENT INADVERTENT OPERATION OF GEAR. INJURY TO PERSONNEL
AND/OR DAMAGE TO EQUIPMENT COULD RESULT IF GEAR RETRACTS.
(1) If the ground lock pins are not installed on all the landing gear, do this task: Install the ground
lock assemblies (PAGEBLOCK 32-00-01/201).
MAIN GEAR MANUAL EXTENSION SYSTEM - TROUBLESHOOTING
1. General
A. In troubleshooting the main gear manual extension system, the trouble symptoms are best identified
by performing a test of manually extending the gear (PAGEBLOCK 32-34-00/501).
B. The system is functionally tested with hydraulic system A depressurized and landing gear control
lever in the OFF position.
C. Two men are required, one stationed in the control cabin to operate the left and right main gear
manual extension handles and one stationed near the gears to observe gear action.
D. Main gear manual extension system must be adjusted properly prior to trouble shooting
(PAGEBLOCK 32-34-00/501).
2. Prepare for Troubleshooting
A. Jack airplane until all tires clear ground (PAGEBLOCK 07-11-11/201).
B. Open manual extension access doors in control cabin floor and attach spring scale to manual
extension handles of gear being tested.
C. Connect external electrical power supply (PAGEBLOCK 24-22-00/201).
D. Pressurize hydraulic system A (PAGEBLOCK 29-15-00/201).
E. Remove main gear ground lock assemblies (SUBJECT 32-00-01).
F. Check that all circuit breakers on landing gear circuit breaker panel P6 are closed.
WARNING: PERSonNEL KEEP CLEAR OF GEAR PATHS TO PRECLUDE POSSIBLE INJURY TO
PERSONNEL.
G. Move landing gear control lever to UP to retract main gear, then move control lever to OFF position.
H. Depressurize hydraulic system A (PAGEBLOCK 29-15-00/201) and proceed troubleshooting with
pressure off.
I. Following troubleshooting, restore airplane to normal.
