that are used, additional pockets may be required to indicate discrepancies that do not result in NMC or PMC categories. The following display methods are described for guidance purposes.

1. A red tab, RED filler, NMC tab/sign indicates a discrepancy that places the aircraft in an NMC category.

2. A blue tab, BLUE filler, PMC tab/sign indicates a discrepancy that places the aircraft in a PMC category.

3. A discrepancy without a color tab, not displayed in a color filler pocket, and not indicated as NMC or PMC indicates a discrepancy that does not affect the NMC/PMC categories.

Regardless of how the VIDS board is set up, IN WORK, AWAITING MAINTENANCE (AWM), AND AWAITING PARTS (AWP) must be visually displayed by aircraft bureau/side number. Also, a minimum of three pockets for each aircraft is recommended.

AIRCRAFT DISCREPANCY BOOK (ADB)

The ADB provides maintenance/aircrew personnel with a comprehensive chronology of flight and maintenance activities performed on specified aircraft by bureau number for at least 10 consecutive flights. These flights are separated by the Aircraft Inspection and Acceptance Record (OPNAV 4790/141). The separator includes the signature, rank/rate, and date of certification of safe for flight condition. The signature must be that of the maintenance officer, maintenance/ material control officer, maintenance control officer, or other authorized persons designated in writing by the commanding officer. Maintenance control maintains an ADB for each assigned aircraft. A copy of each discrepancy is placed in the ADB by maintenance control, and it remains there as long as that discrepancy remains outstanding, regardless of the flight to which it applies. The following paragraph discusses maintaining the ADB under the VIDS/MAF system.

When a discrepancy is written on the VIDS/ MAF, copy 4 of the VIDS/MAF is removed and placed on the right side of the ADB. When corrective action has been completed, copy 4 is removed and forwarded to quality assurance. Copy 3 is then placed on the left side of the ADB. It is removed after 10 subsequent flights, and after verification, it may be discarded if copy 1 has been processed and placed in the historical file.

VIDS OPERATING PROCEDURES (ORGANIZATIONAL)

There are several approved methods of operating the organizational maintenance control VIDS. Only the current discrepancy status display method is discussed in this manual. This method makes it easier to maintain control of the maintenance effort and does not require the extensive communications that are required when other methods are used. Regardless of which method of control is used, the primary consideration is to place maintenance control in control of maintenance.

When the current discrepancy status display method is used, the three columns of the maintenance control VIDS board are titled AWM, IN WORK, and AWP. The maintenance control supervisor verifies the status of the VIDS board(s) with the various work centers at least daily. Then, the maintenance control supervisor determines which work centers have the capability to handle incoming discrepancies. Based on that decision, the steps listed below should be used to ensure a smooth-running operation and the availability of maximum information.

1. Upon completion of a flight, the pilot and/or aircrew initiates a VIDS/MAF for each discrepancy by filling in the following blocks:

Discrepancy block.

Pilot/initiator. The name and rank/rate of the originator of the discrepancy are printed in this block.

Received-date-time (Block B08, B12).

BUNO (Block A52).

Up or down block. (Circle arrow as applicable to indicate aircraft status.)

When discovered code (Block A58).

NOTE: For discrepancies discovered by someone other than the pilot or aircrew, the VIDS/MAF is originated by the person who discovered the discrepancy.

2. Maintenance control reviews each VIDS/ MAF with the pilot/initiator to ensure that the necessary blocks have been filled in. Then, the