LHT DURING CABIN COMPLETION BY PRVE CUSTOMER. REFER LHT EO REPORT AT DELIVERY TO AMIRI FLIGHT. EARLIEST Freq: I E/C: 737-21A1139 5B737-21A1139 AIR CONDITIONING - INSTALLATION OF INSULATION ON OVERHEAD DUCTS Category: ASB Status: N/A Rev: 2 EARLIEST Reason Freq: 1 NOT APPLICABLE TO AIRCRAFT VARIABLE NO YG039 E/C: