Loading Events

« All Events

  • This event has passed.

WCAC ICEAA March Luncheon – Trouble With the Curve: Engineering Changes and Manufacturing Learning Curves

March 25 @ 12:00 pm - 1:00 pm

SUBJECT: WCAC ICEAA March Luncheon: Trouble With the Curve: Engineering Changes and Manufacturing Learning Curves

PRESENTED BY: Brent Johnstone

TIME: Monday, March 25, 2024 | 12:00 to 1:00pm eastern


Engineering changes pose a dilemma for estimators: If learning curves assume cost improvement due to repetitive build, what happens when that repetition is interrupted by a change of task? Design changes are common occurrences, but rarely addressed in learning curve literature. This paper addresses how to analyze an engineering change by breaking it into its pieces and outlines techniques to calculate the reversionary impact on the learning curve to derive the estimated cost of change.

This briefing was originally presented at the ICEAA Professional Development & Training Workshop.

Speaker Bios:

Brent Johnstone is a Lockheed Martin Fellow and production air vehicle cost estimator at Lockheed Martin Aeronautics Company in Fort Worth, Texas. He has 36 years’ experience in the military aircraft industry, including 33 years as a cost estimator. He has worked on the F-16 program and has been most recently the lead Production Operations cost estimator for the F-35 program. He has a Master of Science from Texas A&M University and a Bachelor of Arts from the University of Texas at Austin.


MS Teams

Click here to join the meeting

Meeting ID: 259 439 303 860
Passcode: hb9psb

Or call in (audio only)

+1 253-336-6031,,262274298#  

Phone Conference ID: 262 274 298#


March 25
12:00 pm - 1:00 pm
Event Category:


Microsoft Teams


Washington ICEAA