How RM Surveys Helped Avoid a Factory Return for a Damaged Pilatus Jet

Dimensional Control & Metrology

PROJECT OVERVIEW

On-site rudder alignment verification to factory-level tolerances.

In October 2025, RM Surveys was engaged at Adelaide Airport to support the repair of a damaged Pilatus private jet. The aircraft had sustained structural damage around the rudder assembly.

The manufacturer needed to assess whether the rudder axis alignment could be verified and corrected in situ, rather than returning the aircraft to the factory for validation on a factory jig. This had not been attempted before on this aircraft type.

The objective was to confirm the rudder alignment to factory tolerances on-site, remove the need for a return to the manufacturer, and reduce downtime so the aircraft could get back in the air quickly.

Rapid mobilisation and factory-level accuracy

WHAT WE DELIVERED

DIMENSIONAL METROLOGY VERIFICATION

ON-SITE CALIBRATION & HIGH ACCURACY MEASUREMENT

REAL-TIME ANALYSIS & LIVE ADJUSTMENT

FINAL VERIFICATION WITHIN A SINGLE VISIT

TURNING DATA INTO DESIGN

PROJECT OUTCOMES

The alignment tolerance for the absolute position of the lower rudder bearing was 0.15mm. Achieving this required verified instrumentation, on-site calibration, and a disciplined measurement methodology suitable for aviation compliance.

Precision verification to 0.15mm

RM Surveys measured and analysed the rudder bearing position against the specified factory tolerance of 0.15mm. The verified data provided a clear assessment of the existing alignment condition and confirmed that the required tolerance could be achieved in the field.

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Immediate engineering decision-making

With validated alignment data available on-site, the manufacturer was able to determine that a factory return was not required. This removed the uncertainty typically associated with structural repairs of this nature and allowed the team to proceed with confidence.

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Reduced downtime and expanded scope

The aircraft did not need to be transported back to the manufacturer’s facility. The required tolerance was achieved, and additional works were completed during the same visit, including live adjustment and final locking of new components. Rudder repair and re-fitting progressed ahead of schedule, returning the aircraft to service sooner than anticipated.

For aviation manufacturers and maintenance providers, this outcome represents a direct reduction in downtime, logistics risk, and operational cost.

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I appreciated your quick response to our requirement and was more than satisfied with the quality of work, communication and final report. Thanks again.

Peter Graham, Chief Engineer – Pilatus

TECHNICAL DELIVERABLES

Clear, defensible data to support engineering sign-off.

RM Surveys delivered a complete set of verified dimensional data to support the rudder repair and alignment process.

This included:

Verified dimensional measurement data of the rudder bearing assembly
Alignment analysis confirming compliance with the specified 0.15mm tolerance
On-site reporting to enable immediate engineering decisions
Final validation of the installed component position

All outputs were provided in clear, practical formats suitable for engineering review, compliance documentation, and formal sign-off.

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