Chapter 1. INTRODUCTION - TM-9-4931-378-13-P0011

TM 9-4931-378-13&P

CHAPTER 1

INTRODUCTION

Section I. GENERAL

1-1. Scope. This manual is for your use in operating and

1-5. Calibration. No calibration is required. Adjustment

performing aviation unit maintenance (AVUM) and aviation

and alignment of the Test Set is covered in Chapter 6.

intermediate maintenance (AVIM) of the Test Set, Fire and

Flight Air Data Subsystem XM142.

1-6. Quality Assurance/Quality Control (QA/QC). Infor-

mation not available.

1-2. Maintenance

Forms and Records. M a i n t e n a n c e

forms and records which you are required to use are listed

and explained in TM 38-750.

1-7. Reporting Equipment Improvement Recommenda-

tions (EIR). ElR's will be prepared on SF Form 368, Re-

1-3. Administrative Storage. Administrative storage pro-

p o r t i n g Quality Deficiencies. Instructions for preparing

cedures are contained in TM 740-90-1.

ElR's are provided in TM 38-750, the Army Maintenance

Management System. ElR's should be mailed directly to

1-4. Destruction of Army Materiel to Prevent Enemy

Commander, US. Army Armament Materiel Readiness

Use. Instructions for destruction of Army materiel to pre-

Command ATTN: DRSAR-MAO, Rock Island, IL. 61229.

A reply will be furnished directly to you.

vent enemy use will be as prescribed in TM 750-244-1-5.

Section Il. DESCRIPTION AND TABULATED DATA

1-11. Tabulated Data. Table 1-1 lists pertinent descriptive

1-8. Purpose. The Test Set, Fire and Flight Air Data Sub-

data.

system: XM142, figure 1-1, supports AVIM tests of individ-

Table 1-1. Tabulated Data

ual line replaceable units (LRU) of the Fire, and Flight Air

Data Subsystem, Helicopter Armament XM 143 (Air Data

Dimensions:

Test Set, Fire and

Subsystem). The test set provides electrical simulation of all

Flight Air Data Sub-

LRU input and output signals. All LRU input and output

System: XM142:

Length 19.0 in.

signals are monitored. When used with specified auxiliary

Height 26.0 in.

equipment (refer to TM 9-1270-219-13&P), the test set can

Width 22.0 in.

detect malfunctions and isolate the faults to a shop replace-

Fixture, Checking:

Length

8.0 in.

able unit (SRU).

Height

9.0 in.

Width

4.0 in.

1-9. Description. The test set, figure 1-1, consists of the

Weight:

Test Set, Fire and

test set, Fixture, Checking and Kit, Pneumatic. The Fix-

Flight Air Data Sub-

ture, Checking (checking fixture) and the Pneumatic Kit are

system: XM142:

100 lbs.

stored inside the removable test set cover. Two power ca-

Input Power:

bles, one adapter, and three LRU interconnect cables (all

115 Vac, 50, 60 or 400 HZ, single phase, 100 volt-

part of the test set) and five four-foot lengths of tubing are

amperes maximum

also stored inside the cover. The front panel controls and

28 Vdc, 100 watts maximum

indicators divide into two basic categories; those which con-

Test Set, Fire and Flight Air Data Subsystem: XM142

trol the electrical signals going out to the unit under test

Assemblies:

(UUT), and those which select or display the signals coming

Test Set, Air Data Subystem, Unit 1

from the UUT, Figure 1-2 shows the test set with all loose

Kit, Pneumatic

equipment removed from the cover.

Consisting of:

Case Assembly

1-10. Differences Between Models. There are no differ.

Tubing, five 4-ft lengths.

ences between models.

Fixture, Checking

1-1