SERVICE LETTER INDEX - Twin Commander Aircraft LLC

C C C C CSL P P P P PNO. 1 2 3 4 5 SUBJECT DATE EFFECTIVITY322A X INSPECTION AND REPLACEMENT OF ENGINE ..........24-Jul-79 MODEL 500A, 500B, 500S, 500U,EXHAUST CHUTE RIVETS560F, 680F, 680F(P), 680FL,680FL(P) S/N 871 THRU 1876;MODEL 500S S/N 3050 THRU3318323A X PITOT-STATIC SYSTEM MODIFICATION ......................13-Nov-80 MODEL 690A AND 690B S/N11100 THRU 11566324 X REPLACEMENT OF CENTER FUEL QUANTITY............18-Jan-79 MODEL 690B S/N 11460 THRUTRANSMITTER GASKET 11490, 11492 THRU 11504, 11507THRU 11509, 11511 THRU 11512,EQUIPPED WITH GULLAIRBORNE INSTRUMENTS, INC.FUEL QUANTITY TRANSMITTERP/N 016-902-001 WITH UNIT S/N101 THRU 499325 X X CENTER FUEL TRANSMITTER GROMMET ..................18-Apr-79 MODEL 685 S/N 12049 ONLY;REPLACEMENTMODEL 690A AND 690B S/N11244, 11269 THRU 11439, 11441THRU 11505, 11507 THRU 11513,11515, 11516, 11520, 11523,11526, 11528, 11529, 11531,11533326 X LOWER WING SKIN MODIFICATION .............................25-Jul-79 MODEL 690, 690A AND 690BS/N 11001 THRU 11537327 X BLEED AIR PRESSURE REGULATOR LINE..................3-Jul-79 MODEL 690, 690A AND 690BREPLACEMENT S/N 11001 THRU 11544328 X THERMAL RELIEF VALVE PRESSURE..........................9-Dec-79 MODEL 690B S/N 11350 THRUADJUSTMENT 11599329 X MODS FOR FLIGHT INTO KNOWN ICING .....................25-Feb-80 MODEL 690C S/N 11600 THRUCONDITION 11619330 X WING FUEL CELL SUPPORT INSTALLATION...............25-Feb-80 MODEL 690C S/N 11600 THRU11619331 X INTER TURBINE TEMPERATURE (ITT) .........................25-Mar-80 MODEL 690, 690A AND 690B S/NINDICATOR CHECKOUT AND/OR REPLACEMENT 11001 THRU 11543332 X ENGINE FIRE DETECTOR RELOCATION......................19-May-80 MODEL 690C S/N 11600 THRU11625; MODEL 695 S/N 95000THRU 95003333 X ENVIRONMENTAL CONTROL UNIT (ECU)....................19-May-80 MODEL 690C S/N 11600 THRUPRESSURE SWITCH RECALIBRATION OR 11630; MODEL 695 S/N 95001REPLACEMENT THRU 95010334A X ELECTRIC START SYSTEM MOD AND .........................16-Mar-81 MODEL 690C S/N 11600 THRUSTARTER-GENERATOR GROUND BUS 11633; MODEL 695 S/N 95000BAR REPLACEMENT THRU 95015335 X CIRCUIT BREAKER PANEL ASSEMBLY MOD ..............28-Aug-80 MODEL 690C S/N 11600 THRU11639; MODEL 695 S/N 95000THRU 95024336 X X INTER TURBINE TEMPERATURE (ITT) .........................17-Oct-80 MODEL 690B S/N 11431, 11543INDICATOR REPLACEMENTTWIN COMMANDER AIRCRAFT LCC 1176 Telecom Drive Creedmoor, NC 27522Telephone: 919-956-4300 Fax: 919-682-3786 www.twincommander.comTHRU 11566; MODEL 690C S/N11600 THRU 11650337 X ENGINE MOUNT BRACKET MODIFICATION.................21-Nov-80 MODEL 690C S/N 11631 THRU11650; MODEL 695 S/N 95012THRU 95035338A X AFT FUSELAGE THERMOSTAT INSTALLATION ..........13-Mar-81 PART I: MODEL 690C S/N 11600THRU 11650; MODEL 695 S/N95000 THRU 95040. PART II:MODEL 690C S/N 11600 THRU11662; MODEL 695 S/N 95000THRU 95058339 X BAGGAGE HEATER ANNUNCIATOR LIGHT .................15-Jan-81 MODEL 690C S/N 11620, 11621,LENS REPLACEMENT 11623, 11628 THRU 11631, 11633,11635, 11638, 11639, 11642,11646, 11651 THRU 11653;MODEL 695 S/N 95000, 95002THRU 95005, 95009 THRU95012, 95014 THRU 95018,95020, 95022, 95023, 95025,95026, 95028, 95029, 95031,95033 THRU 95036, 95038, 95041THRU 95044, 95046, 95048PAGE 12 OF 17 REVISED DECEMBER 2002