Amena Dodin

Director of Technical Support

Jordan Civil Aviation Regulatory Commission

2

Jordan

Civil Aviation Regulatory Commission

Flight Inspection Periodicity Extension

Why is Periodic evaluation of navigational aids needed? To ensure the validity of the signals-in-space guidance and improve the

performance of CNS equipment.

How is the Evaluation of air navigation aids and

instrument flight procedures is performed? By checking that they meet established tolerances and provide safe

operations for the intended use.

The flight inspection is conducted by a suitably equipped aircraft for

the purpose of calibration of ground-based NAVAIDS or monitoring

the performance of navigation systems.

Flight Inspection

JCARC

International and National

Standards

ICAO Annex 10

Volume I ICAO DOC 8071

JCAR 171 Radio Navigation

Aids Flight Inspection

Procedure

JCARC

Flight Inspection Types

Flight Inspection

Site Evaluation To determine the suitability of proposed site for the

permanent installation of facility

Commissioning To obtain information on system performance and it is

performed prior to the completion of runway construction

Periodic

Flight inspections to confirm the validity of the signals-

in-space on a regular basis or after major scheduled

facility maintenance.

Special

Flight inspections required as a result of certain corrective

maintenance activities, reported or suspected degradation

of signal-in-space performance, aircraft accidents

JCARC

Ground and Flight Inspection Periodicity

ICAO Doc 8071 includes suggested periodicities for ground and flight tests

States may modify these periodicities (increase or decrease) based on:

Manufacturer’s recommendation

Operational experience

When should we carry out more frequent inspections?

, e.g. following initial installation.

When should we extend inspections?

States should have a documented procedure for determining and changing the

inspection interval.

JCARC

What are the criteria to be considered for flight inspection intervals ?

Intervals of Periodic Inspection

NO. Criteria

1. The reliability and stability of operation of the equipment

2. The extent of ground monitoring

3. The degree of correlation between ground and flight measurements

4. Changes in the operating environment

5. Manufacturer recommendations

6. The quality of maintenance

JCARC

Factors affecting the reliability and stability of operation

of the equipment

• NAVAIDS 2002-2012 Age

• Modern Design Technology

• Stable The operational environment

• Performed according to manufacturer’s manuals

Excessive maintenance adjustments

JCARC

The nominal Intervals of Periodic Inspection

(National Regulations)

JCARC

JCARC

• The COVID-19 pandemic is having a significant impact on the

aviation industry around the world.

•Due to an unprecedented event of COVID 19, flight calibration

(scheduled in April) for the navigation aids system was interrupted

due to Jordanian borders closure last March.

• Jordan ANSP analyzed the safety aspects of the interruption and

determined the criteria to extend the nominal interval between

flight inspections of selected facilities.

Flight Inspection & COVID-19

JCARC

JCAR – CNS service provider has applied the following criteria to

extend the nominal interval between flight inspections:

Stability over four consecutive periodic flight inspections with no

transmitter adjustments was demonstrated by analyzing flight

inspection reports . A summary report was issued.

A record of independent monitor test results was analyzed.

Extensive equipment monitor readings were taken weekly.

Safeguarded the CNS facilities against changes in the operational

environment( e.g. no new building or equipment development).

Flight Inspection Periodicity

Extension Criteria

JCARC

RMM Readings

Ground Check Readings

All of the above resulted in showing evidence that:

The quality of the maintenance is high .

The recorded test result and monitor readings of critical parameters

indicate that the equipment consistently meets performance

requirements.

Hazard Identification and Risk Assessment of Flight Calibration for

ILSs , DVORs and DMEs in Jordan Airports was conducted by

QSMS .

Flight Inspection Periodicity

Extension Criteria

JCARC

Risk Probability and Severity Index

JCARC

Hazard Identification and Risk Assessment

JCARC

Periodicity Extension Decision

JCARC

A procedure to be followed during extension of flight inspection

interval was established .

The extension started upon the approval of CEO of JCARC

Based on the above ; a three-month extension window was

granted

COVID-related health precautions were strictly followed

Action Procedures During Extension Interval

During the validity period of the issued extension; CN service

provider applied the followings procedures to ensure the

stability of the navigation aids systems:

Monthly preventative maintenance.

Monthly Ground check for ILS and DVOR.

Routine Inspection of the operational environment for

any changes

Daily monitoring of ILS, DME and DVOR performance

via Remote control systems.

Measuring the operating frequency of the ILS system

once every two months.

Action Procedures During Extension Interval

A weekly special inspection report shall be issued according to the

following critical parameters:

Daily Check Serviceability

Monitor Reading

Operational Environment

Failure Reports by ATC

Ground check Reading

For full DVOR or DME system failure reported through the ground

monitoring or pilot reports, which require flight inspection the

service shall be withdrawn and NOTAM issued accordingly.

JCARC