As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF "WOW MISCOMPARE" ILLUMINATED AND GEAR WOULD NOT RETRACT. FOUND NLG STRUT UPPER CHAMBER 10PSI LOW AND LOWER CAMBER AT OPSI. PERFORMED NLG STRUT SERVICE IAW MM 32-20-00. PERFORMED GEAR SWINGS AND LEAK CHECKS. OPS AND LEAK CHECKS GOOD.