Volume 4 AIRCRAFT EQUIPMENT AND OPERATIONAL AUTHORIZATIONS
chapter 14 GENERAL OPERATING AND FLIGHT RULES—MAINTENANCE ISSUES
Section 9 Safety Assurance System: Monitor Cockpit Voice Recorders
4-1551 REPORTING SYSTEM.
A. For Title 14 of the Code of Federal Regulations (14 CFR) Part
Program Tracking and Reporting Subsystem (PTRS) Activity Codes.
· Ramp Inspection: 3627.
· Spot Inspection: 3628.
· Cockpit En Route Inspection: 3629.
· Ramp Inspection: 5627.
· Spot Inspection: 5628.
· Cockpit En Route Inspection: 5629.
B. For 14 CFR Parts
Safety Assurance System (SAS) Automation. This section is related
to SAS Element 4.6.1 (AW) Avionics Special Emphasis Programs.
4-1552 OBJECTIVE. This section provides guidance in monitoring cockpit
voice recorders (CVR) during spot, ramp, and cockpit en route inspections.
4-1553 GENERAL. Title 14 CFR requires that certain aircraft be equipped
with a CVR that meets approved design and installation criteria. The regulations
also stipulate that the data obtained from the CVR cannot be used in any civil penalty or certificate action.
Note: This does not negate the aviation safety inspector’s (ASI) authority
and responsibility to monitor the CVR during the performance of airworthiness surveillance functions.
A. Requirements of CVR Maintenance Procedures. The Avionics ASI
is responsible for determining that the maintenance procedures ensure that tests
are conducted according to procedures provided by the CVR manufacturer and shall
include, at a minimum, listening to the recorded signals on each channel to
verify that the audio is being recorded properly, is intelligible, and is free from electrical noise or other interference.
B. Monitoring the CVR. There are no restrictions in the regulations
that prevent periodic monitoring of the CVR as a method of surveillance.
1) ASIs are cautioned against monitoring CVR data for any purpose other
than determining the quality of the recording.
2) Monitoring should be done only to the extent necessary to
determine that the quality of reproduction and maintenance of the CVR is adequate.
C. Acoustic Underwater Locating Device (ULD) Maintenance.
1) To ensure the timely activation of ULDs associated with CVRs,
Avionics ASIs should evaluate their certificate holder’s maintenance and inspection
programs to ensure that procedures for testing ULDs are conducted concurrently
with battery replacement in accordance with manufacturer’s recommendations.
2) Operators’ maintenance or inspection programs should also be evaluated to ensure
that operational testing is being accomplished, consistent with the recorder
or ULD manufacturer’s recommended procedures, at specified intervals and, when
possible, in conjunction with a numbered or phase inspection (e.g., “A,” “B,” or “C” check).
3) These requirements must be reflected on work cards or other inspection cards to ensure system‑wide compliance.
4-1554 PREREQUISITES AND COORDINATION REQUIREMENTS.
A. Prerequisites. Experience with the equipment being inspected.
B. Coordination. This task requires coordination with the operator.
4-1555 REFERENCES, FORMS, AND JOB AIDS.
A. References. See Volume 6, Chapter 2:
· Section 4, Ramp
Inspections for Part
· Section 6, Conduct
Spot Inspection of a Program Manager/Operator’s Aircraft; and
· Section 9, Cockpit
En Route Inspections.
B. Forms. FAA Form 8430-13, Request for Access to Aircraft.
C. Job Aids. None.
B. Monitor the CVR.
1) If this task is being done as part of an en route inspection,
obtain permission from the pilot in command (PIC) before plugging into the CVR system.
Note: Be aware that not all phone jacks on CVR cockpit monitors are
wired for operation.
2) If this task is being done as part of a spot or ramp inspection, accomplish the following:
a) Coordinate with the maintenance supervisor before conducting the inspection.
b) Monitor the in-progress maintenance to ensure that the CVR is
being evaluated for performance of its intended function. Check all channels
to ensure that the audio is being recorded properly, is intelligible, and is free from electrical noise or other interference.
3) Monitor the cockpit area microphone to ensure that it satisfactorily picks up all cockpit audio.
Note: Be aware that the quality of reproduction of some CVRs can be
affected by ground operation of auxiliary power units (APU) and ground power units (GPU).
4) Review the certificate holder’s maintenance procedures for acoustic ULDs to
ensure that the manufacturer’s recommendations are closely followed, including the procedures for the battery check.
4-1557 TASK OUTCOMES.
A. Complete the PTRS Record. For part
B. Follow SAS Guidance Modules 4 and 5. For parts
D. Document the Task. File all supporting paperwork in the applicant’s office file.
4-1558 FUTURE ACTIVITIES. Follow SAS guidance.
RESERVED. Paragraphs 4-1559 through 4-1575.