REC Locomotive Mechanical & Safety Inspections — Questions and Answers

Question 1: Under FRA regulations, how often must a locomotive receive a Class IA inspection?

Every 92 days (Correct answer)
Every 184 days
Every 365 days
Every 30 days

Correct answer: Every 92 days

FRA regulations require a Class IA inspection every 92 days for locomotives in service.

Question 2: Which component must be tested before each locomotive departure to ensure safe brake application?

Automatic air brake system (Correct answer)
Horn circuit
Headlight intensity
Fuel pump pressure

Correct answer: Automatic air brake system

A brake test of the automatic air brake system is required before each departure to confirm proper operation.

Question 3: What is the minimum brake cylinder piston travel limit before corrective action is required on most freight locomotives?

7 inches (Correct answer)
10 inches
14 inches
5 inches

Correct answer: 7 inches

FRA regulations specify that brake cylinder piston travel should not exceed 7 inches without corrective maintenance.

Question 4: When inspecting locomotive wheels, a flat spot exceeding what length requires the unit to be removed from service?

2½ inches (Correct answer)
1 inch
4 inches
½ inch

Correct answer: 2½ inches

A wheel flat spot exceeding 2½ inches in length requires the locomotive to be removed from service per FRA rules.

Question 5: What does a 'blue flag' displayed on a locomotive indicate?

Workers are on or under the equipment — do not move (Correct answer)
The locomotive has passed inspection
The locomotive is out of fuel
The locomotive is cleared for departure

Correct answer: Workers are on or under the equipment — do not move

A blue flag or blue light indicates that workers are on, under, or between equipment, and the locomotive must not be moved.

Question 6: Which FRA regulation part specifically governs locomotive safety standards?

49 CFR Part 229 (Correct answer)
49 CFR Part 232
49 CFR Part 238
49 CFR Part 240

Correct answer: 49 CFR Part 229

49 CFR Part 229 establishes the railroad locomotive safety standards enforced by the FRA.

Question 7: What action must an engineer take upon discovering a non-complying condition on a locomotive at an away-from-home terminal?

Report it and wait for authorization to operate or have the defect repaired (Correct answer)
Continue operating at reduced speed
Immediately abandon the locomotive
Radio dispatch and continue at normal speed

Correct answer: Report it and wait for authorization to operate or have the defect repaired

The engineer must report the defect and either wait for authorized permission to continue or have the defect corrected before proceeding.

Question 8: A locomotive's dynamic brake is found inoperative. Under FRA rules, what restriction typically applies?

The locomotive may still operate but must be reported and handled per carrier rules (Correct answer)
The locomotive must be immediately removed from service
The locomotive can only operate on flat track
No restriction applies if air brakes are functional

Correct answer: The locomotive may still operate but must be reported and handled per carrier rules

An inoperative dynamic brake must be reported, and the carrier's operating rules determine whether restricted operation is permitted.

Question 9: What is the purpose of the locomotive's Sanders system during an inspection?

To deposit sand on rails for improved traction (Correct answer)
To distribute lubricant to wheel flanges
To clean the locomotive fuel filters
To cool the traction motors

Correct answer: To deposit sand on rails for improved traction

The Sanders system deposits sand between the wheels and rail to increase adhesion during wheel slip or slippery rail conditions.

Question 10: During a pre-departure inspection, a cracked front windshield is found on the engineer's side. What must happen?

The locomotive must be taken out of service or the windshield replaced before departure (Correct answer)
The locomotive may depart if visibility is not impaired
A written report is sufficient and the trip may continue
Only night operations are restricted

Correct answer: The locomotive must be taken out of service or the windshield replaced before departure

FRA regulations require that safety-critical glazing on the engineer's side be free of cracks that impair vision; the unit must be removed from service or repaired.

Question 11: Which gauge is used to measure locomotive wheel flange height during inspection?

Wheel flange gauge (Correct answer)
Vernier caliper
Micrometer
Taper gauge

Correct answer: Wheel flange gauge

A wheel flange gauge is the standard tool used to measure flange height and thickness to ensure wheels are within FRA limits.

Question 12: What is the maximum allowable flange height for a standard freight locomotive wheel under FRA regulations?

1½ inches (Correct answer)
1 inch
2 inches
¾ inch

Correct answer: 1½ inches

FRA regulations specify a maximum flange height of 1½ inches for standard freight locomotive wheels.

Question 13: An engineer notices the locomotive's number one traction motor is cutting out intermittently. What is the correct procedure?

Report the defect in the locomotive book and notify the carrier for disposition (Correct answer)
Isolate the motor and continue operating without reporting
Immediately stop the train and wait for a mechanic
Increase throttle to compensate and monitor the situation

Correct answer: Report the defect in the locomotive book and notify the carrier for disposition

Any defect must be documented in the locomotive defect book and reported to the carrier for proper disposition per FRA rules.

Question 14: What does 'bad order' status mean for a locomotive?

The locomotive is removed from service due to a defect requiring repair (Correct answer)
The locomotive is assigned to a lower-priority train
The locomotive has failed its periodic inspection but can continue with restrictions
The locomotive requires fueling before use

Correct answer: The locomotive is removed from service due to a defect requiring repair

A 'bad order' locomotive has been removed from service because it has a defect that must be repaired before it can return to revenue service.

Question 15: Which component of the brake system is inspected to verify proper brake pipe leakage rate during a Class I brake test?

Brake pipe air flow meter (Correct answer)
Brake shoe thickness gauge
Cylinder travel indicator
Retaining valve position

Correct answer: Brake pipe air flow meter

The brake pipe air flow meter (end-of-train or flow meter) is used to verify that brake pipe leakage does not exceed allowable limits during a Class I test.

Question 16: How is a 'locomotive defect' defined under 49 CFR Part 229?

Any condition that does not comply with the requirements of Part 229 (Correct answer)
Only mechanical failures that prevent movement
Any condition reported by the engineer regardless of severity
A condition identified only during periodic inspections

Correct answer: Any condition that does not comply with the requirements of Part 229

Under 49 CFR Part 229, a defect is any condition on the locomotive that fails to meet the regulatory requirements, regardless of operational impact.

Question 17: What is the required minimum air pressure in the main reservoir before a locomotive departs on a freight train?

130 psi (Correct answer)
90 psi
110 psi
150 psi

Correct answer: 130 psi

The main reservoir must be charged to at least 130 psi before departure to ensure adequate air supply for brake operations.

Question 18: During inspection, an engineer finds the locomotive's alerter (dead man device) is non-functional. What must occur?

The locomotive must be removed from service or operated with a second crewmember per carrier rules (Correct answer)
The engineer may continue with extra vigilance
The alerter may be bypassed if the trip is under 50 miles
Only night operations are prohibited

Correct answer: The locomotive must be removed from service or operated with a second crewmember per carrier rules

A non-functional alerter requires removal from service or specific operational restrictions such as requiring a second qualified crewmember.

Question 19: What must be checked on locomotive fuel tanks during a safety inspection to prevent environmental violations?

For leaks, proper venting, and secure fittings (Correct answer)
Fuel temperature and octane rating
Tank pressure and fill cap color coding
Fuel age and contamination level only

Correct answer: For leaks, proper venting, and secure fittings

Fuel tanks must be inspected for leaks, proper venting, and secure fittings to prevent fuel spills that violate environmental and safety regulations.

Question 20: Which lighting component is required to be operational on a locomotive during nighttime operations per FRA rules?

Front headlight, number lights, and cab lighting (Correct answer)
Headlight only
Headlight and rear classification lights only
All exterior lights including step lights

Correct answer: Front headlight, number lights, and cab lighting

FRA requires the front headlight, number lights, and sufficient cab lighting to be operational for safe nighttime locomotive operation.

Question 21: A locomotive's horn fails to sound during a pre-departure test. What is the correct response?

The locomotive must not depart until the horn is repaired or a waiver is obtained (Correct answer)
Depart and use bell as an alternative warning device
Operate at restricted speed and report at destination
Depart if the bell is functioning normally

Correct answer: The locomotive must not depart until the horn is repaired or a waiver is obtained

A functioning horn is required by FRA regulations; the locomotive must not depart until the horn is repaired or a formal waiver is granted.

REC Locomotive Mechanical & Safety Inspections

Under FRA regulations, how often must a locomotive receive a Class IA inspection?

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