NOTE: Change in throttle setting will not affect landing gear green indicator lights.

(c)  
Advance both throttle levers to a position greater than 15 degrees but less than 17 degrees above idle stop. Check that landing gear green indicator lights remain on and red warning lights remain off.

(d)  
Place landing gear lever in OFF position. Check that landing gear red warning lights come on and green indicator lights remain on.

(e)  
Hold a slug near the sensitive face of the nose gear UP LOCK sensor. Check that nose gear red warning light goes off.

(f)  
Remove slug and check that nose gear red warning light comes on.

(g)  
Repeat steps (e) and (f) for right main gear UP LOCK sensor. Results should be the same for the respective warning light.

(h)  
Repeat steps (e) and (f) for left main gear UP LOCK sensor. Results should be the same for the respective warning light.

(i)  
Place landing gear lever in DN position. Check that the three gear red warning lights go off and that the green indicator lights remain on.

(j)  
Hold a copper shield between nose gear down lock sensor and down lock sensor actuator. Check that nose gear green indicator light goes off and nose gear red warning light comes on.

(k)  
Remove shield and check that nose gear red warning light goes off and green indicator light comes on.

(l)  
Repeat steps (j) and (k) for right main gear down lock sensor. Results should be the same for the respective lights.

(m)
Repeat steps (j) and (k) for left main gear down lock sensor. Results should be the same for the respective lights.

(2)  
Test aural warning function of landing gear electrical module.

(a)  
Provide systems A and B hydraulic power (Ref 29-11-0 MP and 29-12-0 MP).

(b)  
Check that AURAL WARNING, EPR WARNING, ENGINE NO. 1 EPR & LG WARNING, and ENGINE NO. 2 EPR & LG WARNING circuit breakers on panel P6 are closed.

(c)  
To avoid nuisance take-off warning signals during the test, perform the following: 1) Check that stabilizer trim indicated reads in green band. 2) Check that speed brakes are stowed. 3) Extend flaps to the 15-unit position. 4) Make sure wheel chocks are in place. 5) Release parking brake.

(d)  
Advance both throttles all the way forward.

(e)  
Hold copper shield between the nose gear downlock sensor and downlock sensor actuator. Check that aural warning horn sounds continuously.

(f)  
Press and hold either ENG-1 EPR >1.6 or ENG-2 EPR >1.6 switch on the front of the engine accessory module located on electrical shelf E3.

(g)  
Check that BOTH EPRS <1.6 light on the front of the engine accessory module goes off and aural warning horn stops sounding.

(h)  
Press and hold AIR SENSING switch on landing gear electrical module. Extend flaps to the 30-unit position and check that aural warning horn sounds continuously.

(i)  
Release the ENG EPR >1.6 switch on the engine accessory module.

(j)  
Retract flaps to 10-unit position and check that aural warning horn stops sounding.

(k)  
Remove the copper shield.

(l)  
Place landing gear lever in OFF position.

(m)  
Hold copper shield between nose gear downlock sensor and downlock sensor actuator. At the same time, hold slug near sensitive face of nose gear uplock sensor. Ensure the following lights are on: left main gear red warning light; left main gear green indicator light; right main gear red warning light; right main gear green indicator light. Ensure the following lights are off: nose gear red warning light; nose gear green indicator light.

(n)  
Retard throttle No. 1 to idle stop. Ensue nose gear red warning light comes on and aural warning horn sounds.

(o)  
Depress warning horn reset switch on control stand. Ensure horn stops sounding and nose gear red warning light remains on.

(p)  
Remove slug from nose gear uplock sensor.

(q)  
Remove shield from nose gear downlock sensor.

(r)  
Hold slug near the sensitive face of right main gear uplock sensor.

(s)  
Hold copper shield between right main gear downlock sensor and sensor actuator.

(t)  
Advance throttle No. 1 to a position greater than 15 degrees but less than 17 degrees above idle stop. Ensure the following lights are on: left main gear red warning light; left main gear green indicator light; nose gear red warning light; nose gear green indicator light. Ensure the following lights are off: right main gear red warning light; right main gear green indicator light.

(u)  
Retard throttle No. 2 to above idle stop. Ensure right main gear red warning light comes on and aural warning horn sounds.
　
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