As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER T/O UNABLE TO RAISE LANDING GEAR, NO MECHANICAL OR ELECT. GROUND SHIFT. SEPARATED INNER & OUTER NOSE STRUT. FOUND PISTON HEAD & RETURN CHECK VALVE INSTALLED UPSIDE DOWN. INSTALLED PISTON HEAD & CHECK VALVE CORRECTLY IAW DC-8 OHM 32-2-1. GROUND SHIFT CHECKS GOOD IAW DC-8 MM 32-23-1. OPS CHECKS GOOD DURING GEAR SWING IAAW DC-8 MM 32-30-0.