44301-10-15

Page 1 of 5

ALERT SERVICE BULLETIN

Equipment/Furnishings - Load Check Inspection - Safety and Reliability

Mar 8/13

This document subject to the controls and restrictions on the first page

1. Planning Information

A. Effectivity

This Alert Service Bulletin and the information it contains is applicable to all part numbers 

and serial numbers of the hoists listed in Table 1. These hoists are manufactured by 

Goodrich Sensors & Integrated Systems, Brea, CA. The only allowable exception to the 

compliance requirements of this ASB is for any hoist that has never been installed on an 

aircraft and has been in storage for less than 24 months.

B. Reason

Goodrich has received information from an Operator reporting an issue with a rescue hoist 

system. According to the information reported to Goodrich, during a flight check the hoist 

lost the ability to hold the load at maximum rated capacity, causing the test load to strike 

the ground. The information reported to Goodrich further stated that after the aircraft 

 TABLE 1. 

Hoist Family Test Load Lb 

(kg) Serial Number Effectivity

42315 950-1050

(430-477)

00001 thru 00652

42325 950-1050

(430-477)

00001 thru 00197

44301-10-4, -7, -9 950-1050

(430-477)

00001 thru 00670

44301-10-1, -2, -5, -6, -8, -10, -11 835-925

(380-420)

00001 thru 00670

44311 950-1050

(430-477)

00001 thru 00158

44312 950-1050

(430-477)

00001 thru 00209

44314 950-1050

(430-477)

00001 thru 00026

44315 950-1050

(430-477)

00001 thru 00034

44316 950-1050

(430-477)

00001 thru 00247 *

44318 950-1050

(430-477)

00001 thru 00012

* Hoists previously converted from -101 to -104 will have a serial number beginning with "2"

TRANSMITTAL OF TECHNICAL DATA (EAR)

These Commodities, Technology or Software are controlled by the U.S. Export

Administration Regulations (EAR). ECCN: 9E991
44301-10-15

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ALERT SERVICE BULLETIN

Equipment/Furnishings - Load Check Inspection - Safety and Reliability

Mar 8/13

This document subject to the controls and restrictions on the first page

landed, the hoist cable could be manually extracted from the hoist using a load of less than 

20 pounds. Goodrich has examined the subject hoist, has confirmed the failure, and has 

determined that the overload clutch failed. The behavior seen in the effected hoist has 

never been seen in any other hoist, beginning with the fleet introduction in 1989. Taking 

this fleet experience into account, this event is unique to Goodrich, but it is being closely 

monitored in cooperation with EASA and the FAA.

C. Description

The overload clutch design is common to all externally-mounted rescue hoists. Due to the 

nature of the reported incident, Goodrich is requiring the following inspection and 

operational check procedure be performed to allow operators to check the rescue hoists in 

their fleets and to ensure that they remain in a serviceable condition.

D. Compliance

The actions in this Alert Service Bulletin shall be performed within thirty (30) days of the 

release date of this document. Hoists which are in storage do not need to meet this 30 day 

requirement, but will need to be tested IAW this document before their next operation. 

Record the performance of this ASB in the hoist log and send an email to ASB.SISCA@utas.utc.com indicating the hoist part number, serial number, test load, and the 

results of the test.

If the hoist fails the test, the hoist shall be considered non-airworthy and the test result 

email will be forwarded to Goodrich Customer Service which will contact the operator with 

an RMA to return the failed hoist for maintenance.

E. Approval

This service bulletin contains no modification information that revises the FAA approved 

configuration. 

F. Manpower

(1) The estimated amount of labor to accomplish the instructions of this Alert Service 

Bulletin for Rescue Hoist Assembly is 1 hour, as follows:

(2) The inspection described in this Alert Service Bulletin shall be performed by the 

operator.

Perform cable conditioning lift 30 minutes

Perform load test 30 minutes
44301-10-15

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ALERT SERVICE BULLETIN

Equipment/Furnishings - Load Check Inspection - Safety and Reliability

Mar 8/13

This document subject to the controls and restrictions on the first page

G. Material — Cost and Availability

None.

H. Tooling - Price and Availability

None.

I. Weight and Balance

Not affected.

J. Electrical Load Data

Not affected.

K. Software Accomplishment Summary

None.

L. Reference

None.

M. Other Publications Affected

None.

2. Accomplishment Instructions

Goodrich requires that the hoist and aircraft be inspected in accordance with the requirements 

of the Goodrich Component Maintenance Manual (CMM) and the aircraft’s Aircraft Maintenance 

Manual (AMM).

Upon successful completion of these inspections, Goodrich requires that a “Load Check” be 

performed to ensure that the hoist overload clutch does not operate with a load attached to the 

hook. This Load Check consists of raising, controlling, and lowering a weight with the hoist while 

the aircraft is on the ground.

The following load check operations ensure that the rescue hoist system is in a safe and 

operational condition for service:

A. To prevent the cable from being pulled between wraps on the outer layer of the cable drum, 

perform a cable conditioning lift before performing the load check. Cable conditioning can 

be accomplished by utilizing the following procedure:
44301-10-15

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ALERT SERVICE BULLETIN

Equipment/Furnishings - Load Check Inspection - Safety and Reliability

Mar 8/13

This document subject to the controls and restrictions on the first page

(1) From a hovering aircraft, fully extend the hoist cable to the down limit stop.

(2) Reel in a load of approximately 500 lbs (227 kg), up to the maximum of the hoist rated 

capacity for of the full length of cable.

NOTE: Alternate methods of performing the load check can be used in lieu of the procedure 

below. Any alternate procedure can only be used if pre-approved by the airframe 

manufacturer.

B. Park the aircraft and supply external power to the aircraft. Assure that the wheels are 

chocked or the parking brake is set.

C. If the hoist is mounted to a movable boom, operate the boom to move the hoist as far out 

as required to lift the load without interfering with the aircraft. Extend the hoist cable (OUT) 

to the ground.

WARNING: Use of this procedure with a light helicopter has the potential to tilt over the aircraft 

when the boom is fully extended or the helicopter is in a very light configuration.

D. Attach a weight of 880 lbs (400 kg) to the hoist cable hook. Locate the weight directly 

under the hoist to minimize the fleet angle and hence the lateral forces on the hoist and 

cable.

E. Begin to slowly and carefully retract the hoist cable (IN) to lift the weight off the ground. 

While the cable is being retracted by the hoist, observe the hoist’s performance to verify 

that the cable reels in a controlled manner.

F. Stop retracting the hoist cable so that the weight is held suspended by the hoist. If a higher 

load is called for in accordance with Table 1, gently apply the additional load without 

imparting any shock loads. With the hoist in the stopped condition, observe the hoist’s 

performance to verify that the load is being held secure and the load remains off the 

ground for a period of one (1) minute.

G. After holding the load for one (1) minute, slowly extend the hoist cable (OUT) to lower the 

weight to the ground.

H. Disconnect the load weight from the hoist cable hook.

I. Inspect the first 30 feet (10 meters) of the cable for damage and size in accordance with 

the CMM. Fully retract the hoist cable.

J. Load check complete.

K. Perform the daily post-flight inspections required by both the Goodrich CMM and the 

aircraft AMM.
44301-10-15

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ALERT SERVICE BULLETIN

Equipment/Furnishings - Load Check Inspection - Safety and Reliability

Mar 8/13

This document subject to the controls and restrictions on the first page

L. Marking 

(1) Document the incorporation of this ASB on the Hoist Log Card or maintenance 

record.

M. Point of Contact

Goodrich Corporation,

Sensors & Integrated Systems (SIS-CA)

Brea, CA 92821

Phone: 714-984-1461

3. Material Information

None