As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LANDING GEAR WAS EXTENDED USING ABNORMAL GEAR EXTENSION CHECKLIST BECAUSE, UPON TAKEOFF AT GEAR RETRACTION NEITHER MAIN GEAR CAME UP. REMOVED LT GEAR DOOR PROX SWITCH PN 803682, SN1408 INSTALLED PN 84799031 SN 2047. REMOVED RT GEAR DOOR PROX SWITCH PN 803682 SN 1401 INSTALLED PN - 803682 SN 1131. REMOVED PCB (417JE) PN F422 SN 5303 INSTALLED PN 12-337-39 SN 333. REMOVED RELAY (5OYGM) PN F302-122 NSN INSTALLED PN F302-122 NSN. ALL CHECKS PERFORMED IAW THE MM 32-300 AND 32-002 WITH NO DEFECTS NOTED AT THIS TIME.