t, and Engine/APU Maintenance. For time and materials work: (a) labor (including engineering services) is billed according to the rates set forth in the Gulfstream Labor Rate Letter in effect as of the date the work is performed.. and (b) materials are billed according to Gulfstreant's standard prices in effect on the date the

t, and Engine/APU Maintenance. For time and materials work: (a) labor (including engineering services) is billed according to the rates set forth in the Gulfstream Labor Rate Letter in effect as of the date the work is performed.. and (b) materials are billed according to Gulfstreant's standard prices in effect on the date the

t, and Engine/APU Maintenance. For time and materials work: (a) labor (including engineering services) is billed according to the rates set forth in the Gulfstream Labor Rate Letter in effect as of the date the work is performed: and (b) materials are billed according to Gulfstreant's standard prices in effect on the date the m