//UNCLASSIFIED//
102028Z DEC 08
USE THIS DTG TO REFERENCE THIS MESSAGE
FROM CDR JMC ROCK ISL IL//AMSJM-QAS//
740 (A)
SUBJECT: AMMUNITION INFORMATION NOTICE (AIN) 023-09, SHORT
ROUND AND MISFIRE PROCEDURES FOR CARTRIDGES, 81MM, HE M889/M821
(1315-C869/C868)
A. AR 75-1, MALFUNCTIONS INVOLVING AMMUNITION AND
EXPLOSIVES (RCS GSLD-1961 (MI)), 04 NOV 08.
1. AIN 022-09 WAS TRANSMITTED ON 102025Z DEC 08.
2. THIS AIN SUPERSEDES AIN 150-07.
3. REQUEST DISSEMINATION OF THIS AIN TO ALL UNITS FIRING
81MM MORTARS, RANGE SAFETY OFFICERS AND EOD.
4. RARE INSTANCES OF SHORT ROUNDS AND MISFIRES MAY BE
EXPECTED WITH SUBJECT CARTRIDGES MANUFACTURED PRIOR TO
NOVEMBER 1989. CAUSE IS BLOCKAGE OF PRIMER FLASH HOLE BY
SEALING COMPOUND UTILIZED IN MANUFACTURE. TESTING HAS
DETERMINED SHORT ROUNDS CAUSED BY THIS DEFECT WILL FALL AS
SHORT AS 3.5 FEET AND AS FAR AS 140 FEET FROM WEAPON.
ASSEMBLED FUZES, PD, M935 AND MULTI-OPTION, M734 NORMALLY DO
NOT ARM WITHIN THIS RANGE OR FUNCTION UPON IMPACT.
5. FOLLOWING PROCEDURES APPLY TO SHORT ROUNDS:
A. GUN CREWS EXPERIENCING SHORT ROUNDS DESCRIBED IN PARA 4
MUST EVACUATE FIRING POSITION DUE TO REMOTE POSSIBILITY FOR
FUZE ARMING. EOD MUST ACCOMPLISH DISPOSAL OF DUDS.
B. REQUEST THAT FIRING UNIT SUBMIT AN AMMUNITION MALFUNCTION
REPORT, DA FORM 4379. INCLUDE INFORMATION FROM EOD ON THE
PRESENCE OF UNBURNED PROPELLANT OR OTHER UNUSUAL CONDITIONS
AND INCLUDE PHOTOGRAPHS AND OBSERVATIONS INTO REPORT.
6. FOLLOWING PROCEDURES SHOULD BE UTILIZED FOR MISFIRES:
A. IF ACTUAL RATE DOES NOT MEET REPORTABLE RATE SPECIFIED IN
TABLE B-1 OF REFERENCE, MISFIRES SHOULD BE REPACKED,
CONTAINERS MARKED "MISFIRES", AND RETURNED TO AMMUNITION
SUPPLY POINT. QUALITY ASSURANCE SPECIALIST, AMMUNITION
SURVEILLANCE (QASAS) SHOULD INSPECT MISFIRES, REPORT
OBSERVATIONS (TO INCLUDE PHOTOGRAPHS) IF POWDER BURNS ARE
FOUND AROUND PRIMER HOUSING, OR PROPELLANT IS FOUND TO BE
SCORCHED. THESE CONDITIONS ARE INDICATIVE OF BLOCKED FLASH
HOLE.
B. IF ACTUAL RATE MEETS OR EXCEEDS REPORTABLE RATE
IMMEDIATELY REPORT MALFUNCTION AND TAKE OTHER ACTION AS
REQUIRED BY PARA 2-1 OF REFERENCE. QASAS SHOULD INSPECT
MISFIRED ROUNDS, AS IN PARA 6A.
7. ABOVE REQUIREMENTS ARE IN ADDITION TO, NOT IN LIEU OF,
ACTIONS REQUIRED BY REFERENCE.
8. POINT OF CONTACT IS MR KYLE VOELCKER, AMSJM-QAS, DSN
793-3151, (309) 782-3151, E-MAIL KYLE.VOELCKER@US.ARMY.MIL.
9. THIS AIN EXPIRES 31 DEC 09 UNLESS OTHERWISE RESCINDED OR
SUPERSEDED.
//SIGNED//
LEWIS H. KOPERA
CHIEF, AMMUNITION SURVEILLANCE DIVISION
