COUSTIC FIBER. SERVICE LETTER INFORMATIONAL 27-AUG-1999 MOS - (s) SL 737-SL-24-146 POWER DISTRIBUTION PANEL. P92. INSPECTION & MODIFICATION OF RIGID BUS ASSEMBLY. SERVICE LETTER INFORMATIONAL 07-SEP-1999 MOS - (s) SL 737-SL-24-146 REV. A POWER DISTRIBUTION PANEL. P92. INSPECTION & MODIFICATION OF RIGID B