Service difficulty report · Attach Fitting · Diamon DA42NG

Difficulty date
December 12, 2025
Submitted
May 22, 2026
Operation
General aviation
Aircraft
N408SA
Make and model
Diamon DA42NG
Aircraft serial
42AC047
Aircraft time
3,396 hours
Engine
Austro E4
Engine time
772 hours
Propeller
Mtprop MTV6*
Part
Attach Fitting
Part number
D6057103120NPC
Condition
Debonded
Location
Zone 100
Part time
3,396 hours
Stage of operation
LD
How discovered
O
Nature of condition
O
Precautionary procedure
O

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

What was found

ON ROLL OUT AFTER LANDING THE LH LANDING GEAR RETRACTED UNCOMMANDED CAUSING A PROPELLER STRIKE AND LH WING TIP TO TOUCH GROUND. UPON INVESTIGATION IT WAS DISCOVERED THAT THE LANDING GEAR SUPPORT BOX THAT BONDS TO THE SPAR HAD COME DETACHED FROM THE SPAR DUE TO A COMPOSITE GLUE FAILURE CREATING A CLEAN SEPARATION ALLOWING THE GEAR TO FOLD INWARD ALTHOUGH THE HYDRAULIC ACTUATOR HAD NOT COLLAPSED.

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