List the requirements after passing over a defect detector: - Answer -1. Listen for the
inspection results message, and
2. Confirm their mutual understanding of the contents of the inspection results message.
(4303.1)
List the requirements if all crewmembers are unable to agree on the contents of the
inspection results message: - Answer -If all crewmembers are unable to agree on the
contents of the inspection results message, the message must be treated as not
received.
(4303.2)
With regards to defect detectors, when is a walking inspection of the entire train
required? - Answer -A walking inspection of the entire train is required when the train:
a. Is not inspected by two consecutive defect detectors including defect detectors out of
service, or
b. Passes over two consecutive defect detectors at less than 8 mph.
(4303.3)
List the requirements if a defect detector indicates No Defects: - Answer -If the defect
detector indicates no defects then:
Proceed
(4303.4)
List the requirements if a defect detector indicates one or two defects: - Answer -If the
defect detector indicates One (1) or Two (2) defects then:
1. Stop and inspect for the reported defect(s), and
2. Promptly report inspection results to the train dispatcher.
(4303.4)
,List the requirements if a defect detector indicates three or more defects: - Answer -If
the defect detector indicates Three (3) or more defects then:
1. Stop. Contact the train dispatcher and provide the following information:
1. Defect detector milepost location and name,
2. Track number, in multiple track territory,
3. Total number of axles in the train, including the locomotive consist, and
4. Location of the defects reported by the defect detector.
2. Inspect the reported defects.
3. If:
a. The train dispatcher states that there are no additional defects then the train crew is
not required to perform additional inspections, or
b. The train dispatcher provides the location of additional defects then the train crew
must inspect the additional defects, or
c. The train dispatcher states that no information is available then the train crew must
inspect each axle behind the last defect reported by the defect detector.
4. Promptly report inspection results to the train dispatcher.
(4303.4)
List the requirements if the defect detector indicates NO results message is received or
the message is NOT clearly received or NOT understood: - Answer -If the defect
detector indicates "No results message is received or the message is not clearly
received or not understood, then:
1. Immediately reduce train speed to thirty (30) MPH
2. Contact the train dispatcher and provide the following information:
1. Defect detector milepost location and name,
2. Track number, in multiple track territory,
3. Total number of axles in train, including the locomotive consist, and
4. No results message was received or the message was not clearly received or not
understood
3. If:
1. The train dispatcher states that there are no defects reported then the train may
proceed, or
2. The train dispatcher provides the location of reported defects then the train crew
must inspect the reported defects, or
3. The train dispatcher states that no information is available the the train crew must
proceed at thirty (30) MPH until the next defect detector or a roll by inspection is
completed by a qualified employee on the ground and no defects were observed.
4. Promptly report inspection results to the train dispatcher.
, (4303.4)
List the requirements if defects detector indicates NO alarm tone is received when
passing over the defect detector and results message indicates integrity failures, it is
NOT working, it has malfunctioned, or as axle count malfunction: - Answer -1.
Immediately reduce speed to thirty (30) MPH,
2. Report the occurrence to the train dispatcher, and
3. Do not exceed thirty (30) MPH until:
a. Passing over another defect detector that inspects for hot bearings and/or dragging
equipment, and
b. A roll by inspection is completed by a qualified employee on the ground and no
defects were observed.
(4303.4)
List the requirements if a defect is not found at the location identified and the passenger
train's speed was 8 MPH or more: - Answer -Inspect remaining axles on both sides of
the car and two cars ahead of and behind the suspected car.
(4304.2)
List the requirements if defects detector indicates alarm tone is received when passing
over the defect detector and the results message indicates integrity failures, it is NOT
working, it has malfunctioned, an axle count malfunction, or a defect at an axle location
that exceeds the known number of axles for the train: - Answer -1. Stop. Contact the
train dispatcher and report the occurrence,
2. Inspect the entire train for defects, and
3. Promptly report inspection results to the train dispatcher.
(4303.4)
List the requirements if a defect is not found at the location identified and the train's
speed was less than 8 MPH: - Answer -Make a walking inspection of the entire train.
(4304.2)
List the requirements if no defect is found during the required inspection: - Answer -
Proceed at authorized speed.
(4304.2)
List the requirements if a "Hot Bearing" is found: - Answer -Comply with procedures for
inspecting hot bearings.
(4304.2)
List the requirements if the same bearing actuates two or more defect detectors on the
same trip and no defect is found: - Answer -Freight trains:
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