Technical data

13773-001
25-60
Page 1
EMERGENCY
1. DESCRIPTION
A. Emergency Locator Transmitter (ELT)
For specific information on the ACK model E-01 ELT, refer to the ACK Technologies Installation and
Operation Manual (Manual Number 9/94). (See Figure 25-601)
WARNING:
The ACK model E-01 ELT is designed to use only Duracell MN1300 alkaline batter-
ies which are dated by the manufacturer. This ELT does not meet the require-
ments of TSO-91a or FAR 91.207 if used with any other type of battery. ELT
batteries must be inspected in accordance with the requirements of the replace-
ment schedule in Chapter 5. The ELT batteries must be replaced prior to the date
stamped on the batteries or whenever the batteries have been in use for one
cumulative hour. Replace all ELT batteries at the same time and with the same
expiration date stamp.
This airplane is equipped with a self-contained ELT. The ELT transmitter is installed immediately
behind the aft cabin bulkhead. The ELT is mounted slightly to the right of the airplane centerline. The
transmitter and antenna are accessible through an access panel at the base of the baggage compart-
ment bulkhead. The transmitter uses integral and remote antennas.
The transmitter unit is mounted longitudinally in the airplane in order to detect deceleration greater
than 3.5 feet per second. If rapid deceleration is detected, the transmitter will repeatedly transmit VHF
band audio sweeps at 121.5 Mhz and 243.0 Mhz approximately 0.5 seconds apart. The transmitter is
automatically activated upon sensing a change of velocity along its longitudinal axis, exceeding 3 to 5
feet per second. The transmitter can be removed from the airplane and used as a personal locating
device if it is necessary to leave the airplane after an accident.
The ELT Remote Switch and Control Panel Indicator (RCPI) are located below the circuit breakers on
the circuit breaker panel. The RCPI provides test and monitoring functions for the transmitter. The
panel contains a button labeled ON, a button labeled RESET, and a red LED (light). The red light
flashes when the ELT is transmitting. A Duracell PX28L or Kodak K28L 6-volt lithium battery mounted
in the panel powers the LED. RCPI batteries must be inspected in accordance with the requirements of
the replacement schedule in Chapter 5. The RCPI batteries must be replaced prior to the date
stamped on the batteries or whenever the batteries have been in use for any unknown period of time.
The ON button is used to test the unit in accordance with the ACK Maintenance Manual and AIM pro-
cedures. The RESET button can be used to cancel an inadvertent transmission.
The main transmitter control switch is labeled ON-OFF-ARMED. The transmitter is in the armed posi-
tion for normal operations. Eight dated “D” cell alkaline batteries contained within the transmitter unit
provide power to the transmitter. ELT battery replacement is required upon reaching the date marked
upon each battery. ELT batteries must be inspected in accordance with the requirements of the
replacement schedule in Chapter 5. All batteries must be replaced at the same time and all batteries
must have the same expiration date. FAR 91.207 (d)(1) requires that batteries be replaced when the
transmitter has been in use for more than one cumulative hour. The expiration date of the batteries
must be indicated on the outside of the ELT battery case and recorded in the aircraft logs.
30 Nov 2000