4.  Disposal of Self-Illuminating Signs
A.  Non-U.S. Airlines
(1)  The responsible governmental agent should be contacted to obtain locally prescribed procedures for the authorized disposal organizations. Alternatively, parts may be sent to the part manufacturer after obtaining instructions for handling.
B.  All Airlines
(1)  If disposal instructions cannot be obtained from any of the above sources, contact one of the following for instructions.
(a)  
Safety Light Corporation (Formerly United States Radium Corp.) 4150-A Old Berwick Road Bloomsburg, PA 17815, U.S.A. Telephone 717-784-4344 TWX 510-655-2634

(b)  
Boeing Radiation Health Protection, Org 4-1635
Seattle Services Division P. O. Box 3707
Seattle, Washington 98124, U.S.A.
Mail Stop 2T-04
Attention: W. E. Morgan
Emergency Telephone 206-655-0500

C.  Packaging Radioluminous Material for Shipment
(1)  
Remove radioluminous exit sign and place in plastic bag.

(2)  
Place plastic bag in tight metal container, such as empty smal1 paint can, with sufficient packing material to prevent excessive motion in can. No more than five signs should be shipped in any one package.

501 
33-51-41 Page 206  BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.  Jun 20/83 

EMERGENCY EXIT LIGHT NICKEL-CADMIUM BATTERIES - MAINTENANCE PRACTICES
1.  Capacity Check
A.  Initial Battery Check
(1)  
The purpose of the initial check is to determine if the batteries will power the exit light for a minimum of 20 minutes.

(a)  Discharge the batteries by lighting the exit light, noting that both lamps are lit. Lamps will suddenly grow very dim when batteries reach the discharged condition.

(2)  
This initial check may be performed either in the aircraft or in the shop. Lights are turned on in the aircraft by means of the emergency lights control switch located on the pilot's overhead panel. Note that electrical power must be supplied to provide control power for turning lights on and off in the aircraft.

CAUTION:  AFTER THIS CHECK IS PERFORMED IN AN AIRCRAFT, BATTERIES IN EACH OF THE AIRCRAFT LIGHT UNITS MUST BE REPLACED WITH FULLY CHARGED BATTERIES.
2.  Charging
A.  Batteries from light units that checked O.K. in providing 2 minutes of illumination should be recharged at a rate of 150 milliamperes for 16 hours.
CAUTION: BATTERY CHARGE RATE SHOULD NOT EXCEED 150 MILLAMPERES.
B.  Batteries from light units that did not provide 20 minutes of illumination on initial check, but show no sign of leakage or physical damage (see "Condition Check" below), should be charged at a rate of 150 milliamperes for 16 hours and then be rechecked in a light unit. If batteries then provide 20 minutes of illumination, they are acceptable and should again be charged at a rate of 150 milliamperes for 16 hours before returning to service.
500 
Nov 15/71  BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.  33-51-51 Page 201 

3.  Storage
A.  It is preferred that batteries be kept on float charge (50-100 ma) until such time as they are installed in an aircraft.
(1)  As an alternate, batteries may be taken off charge and stored "on the shelf" for a maximum period of 90 days, after which time they must be recharged before use.
B.  Batteries must be individually labeled with the date charging is completed, if they are to be stored on the shelf.
(1) Batteries kept on float charge are ready for use indefinitely and need not be dated.
4.  Condition Check
A. Batteries found in one or more of the following conditions should be taken out of service.
(1)  
Bulged at either or both ends.

(2)  
Positive terminal broken off.

(3)  
Leaking, as evidenced by an oily substance at the sealed end.

NOTE:  The white powdery substance sometimes found at the seal is not harmful to the battery and may be brushed off. Leakage is associated only with the oily substance.
500 
33-51-51 Page 202  BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.  Aug 15/69 

EMERGENCY ESCAPE SLIDE LIGHTS - MAINTENANCE PRACTICES
EFFECTIVITY
ALL EXCEPT ATI INTERIOR
1. General
A.  This procedure is for replacement of the lamps in the light assemblies which illuminate the escape slide areas.
2.  Relamp Escape Slide Lights
A.  Remove four relamping screws (Fig. 201).
B.  Carefully pry loose and remove lens assembly and gasket.
　
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