Service difficulty report · Throttle · Boeing 757224

Difficulty date
October 13, 2025
Submitted
October 17, 2025
Operation
Air carrier
Aircraft
N21108
Make and model
Boeing 757224
Aircraft serial
27298
Aircraft time
106,497 hours, 25,728 cycles
Engine
Rroyce RB211535E4B3
Engine time
102,473 hours, 23,361 cycles
System (JASC)
7603 · Power Lever
Part
Throttle
Condition
Obstructed
Location
Nr 2 Eng
Part time
25,028 hours, 23,361 cycles
Stage of operation
TO
How discovered
O
Nature of condition
S
Precautionary procedure
C

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

LARGE SPLIT ON THROTTLE TO TRY TO OBTAIN TO THRUST. ENGINE UNAB LE TO MAKE TAKEOFF POWER PERFORMED TEST 13 (TAKE OFF POWER TEST) IAW MM-71-00-00-715-223 ON NR 2. ALL TEST PASSED. PERFORMED TEST 9 (THRUST LEVER /POWER ANGLE TEST) IAW MM-71-00-00-715-170. TEST FAILED AT PARA 21F(7)(H)5). NO REDUCTION IN EPR. ALSO FOUND THRUST REVERSER FEED-BACK CAMS RESTRICTING FULL THROTTLE MOVEMENT AFTER CYCLING THRUST REVERSER. PERFORMED RIGGING OF RT FFG IAW AMM 71-00-00-715-170-R03 & ADJUSTED RT TLA RESOLVER TO WITHIN LIMITS IAW AMM 71-00-00-715-170-R03 STEP 6. AFTER FIX FOR #2 ENGINE LOW EPR, NOTED NO THROTTLE SPLIT AT TAKE-OFF POWER. CYCLED THRUST REVERSER SEVERAL TIMES WITH NO ABNORMALITIES. ACFT OK TO CONTINUE. PERFORMED TEST 13 (TAKE-OFF POWER TEST). IAW AMM 71-00-00-715-223-R03. TEST PASSED.