As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
REF LP 60919253RH PACK LIGHT ILLUMINATED DURING TAXI. GROUNDED - YES. TROUBLESHOT IAW B737-900 FIM 21-53 TASK 820. REMOVED AND REPLACED RH ACM IAW B737-900 AMM 21-51-04. REMOVED ACM HAD FAN IMPELLER BLADE DAMAGE, NO FURTHER DEFECTS NOTED WITH INSPECTION PER AMM 21-51-04. OPS CHK GOOD. LEAK CHECK GOOD. PERFORMED PACK/ZONE TEMPERATURE CONTROLLER BITE TEST OF BOTH CONTROLLERS IAW AMM 21-61-00. BITE CHECK GOOD. RAN PACK FOR 15 MIN, NO DEFECTS NOTED.