MOUNTAINHOMEAFBI21-167 — Avionics Pod And Line Replaceable Unit (lru) Bad Actor, Could Not Duplicate (cnd), And Repeat/recur Program

MOUNTAINHOMEAFBI21-167 governs the 366th Fighter Wing avionics LRU bad actor, CND, and repeat/recur program.

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  • Publication number: MOUNTAINHOMEAFBI21-167
  • Title: AVIONICS POD AND LINE REPLACEABLE UNIT (LRU) BAD ACTOR, COULD NOT DUPLICATE (CND), AND REPEAT/RECUR PROGRAM
  • Date: 2015-12-21

View MOUNTAINHOMEAFBI21-167 on armypubs.army.mil


It establishes procedures for identifying, reviewing, testing, documenting, and returning avionics LRUs that repeatedly fail or cannot be duplicated. The publication requires supervisory review, historical checks, failure documentation, database annotations, and depot returns with deficiency reports.

Applies to: It is applicable to avionics maintenance personnel under the direction of 366 MXG/CC.

Topics covered

  • Avionics line replaceable units
  • Bad actor program
  • Could not duplicate reviews
  • Repeat/recur failures
  • LRU testing procedures
  • Deficiency reports
  • Aircraft ground and built-in-test checks

Questions and answers

What is the primary objective of the bad actor program?

The primary objective of the bad actor program is to identify and remove from service avionics LRUs that repeatedly fail on the aircraft but cannot be reliably duplicated or repaired during intermediate level maintenance. (paragraph 1)

What documentation must bad actor LRUs have?

Ensure bad actor LRUs have detailed documentation on fault indications, test steps failure results, and past failure data. (paragraph 2)

How are LRUs identified as repeat or recur?

Ensure LRUs are identified as repeat/recur through LRU historical checks. (paragraph 2)

What review is required before 3-level maintenance?

Sections performing 3-level maintenance will do a thorough review of LRU history before maintenance to determine if LRU meets repeat/recur criteria. (paragraph 3)

What happens for a first-time CND?

Upon completion of testing, a qualified technician will inspect the LRU, sign two Department of Defense (DD) Forms 1574, Serviceable Tag – Materiel, and return unit to service. (paragraph 3)

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