As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(AIRCRAFT NOT GROUNDED) (EMERGENCY DECLARED WITH ATC) AFTER T/O FA'S [AFT 2] STATED HEARING LOUD METAL ON METAL GRINDING NOISE UPON LANDING GEAR RETRACTION / PERFORMED GEAR SWING IAW EVA 737M-SYS-32EVA-00550 REV 00-BOEING- N817NV - DEVIATION FROM AMM TASK32-32-00-710-801, ACCOMPLISHED. OPS CHECK GOOD NO DEFECTS NOTED ACFT OK TO RETURN TO SERVICE.