Service difficulty report · Spring Assy · Doug DC873F

Difficulty date
February 10, 2004
Submitted
February 25, 2004
Operation
Air carrier
Aircraft
N873SJ
Make and model
Doug DC873F
Aircraft serial
46091
Part
Spring Assy
Condition
Defective
Location
Elevator
Stage of operation
CL
How discovered
O
Nature of condition
F
Precautionary procedure
O

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

What was found

DURING TAKEOFF, TAKEOFF TRIM SETTING OF 4.1 INITIAL ROTATION NORMAL AFTER GEAR RETRACTION ACFT PITCHED UP SLOWLY TO 20 DEG. PITCH UP & WAS REQUIRED TO PUT FWD PRESSURE ON CONTROL WHEEL TO APPROX 1.5 UNITS OF TRIM, LANDED WITH 4.0 UNITS OF TRIM. PERFORMED ELEVATOR CHECK. RIG CHECKED BOOST TABS, CONTROL TABS, PTC & LOAD FEEL MECHANISM. FOUND ELEVATOR CONTROL TABS OUT OF RIG. CORRECTED RIGGING. AFTER ROTATION A/C REQUIRED 1.2 DEG FORWARD TRIM TO HOLD V2+10. T/O TRIM SETTING 3.2, STABILIZED SETTING 2.0, CRUISE SETTING 2.0 AT 280 KIAS, APPROACH 3.0 AT 145 KIAS, LANDING 4.8 AT 129 KIAS. REMOVED & REPLACED ELEVATOR LOAD SPRING ASSY. AFTER REPLACEMENT OF ELEVATOR FEEL MECH, SYS CHECKS SERVICEABLE.

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