His resignation will trigger a leadership shakeup for both the 737 program and the proposed new mid-range aircraft, also referred to as the "New Midsize Airplane", or "NMA", that Boeing is developing to replace the aging 757.
United Airlines has announced that it cancelled thousands of additional flights involving the Boeing 737 Max, covering around 2,100 flights that were scheduled for September and another 2,900 for October.
Described as a "quiet, get-on-and-do-it" engineer, Jenks spent half of his 36-year Boeing career on the 787 and an earlier alternative that was never launched, the Sonic Cruiser.
But the management shakeup marks a shift in the US planemaker's immediate focus toward getting its best-selling 737 MAX, the jet that was grounded after two crashes killed almost 350 people in the span of five months, back in the air and generating cash. Jenks had previously helped stem losses on the 787 Dreamliner program and turned the advanced jet into a major generator of cash for the Chicago-based manufacturer.
Mike Sinnett, a product-strategy executive who has talked to airline pilots and reporters about the flight-control system on the Max, will take over the mid-size plane program.
The Max is critical to Boeing's future; the company has a backlog of about 4,500 orders from around the world. The fourth major airline in the United States, Delta Air, does not have the Boeing 737 Max in its fleet and therefore does not face the same cancellation issues. He said during his time running the 737 program, Lindblad "has navigated some of the most hard challenges our company has ever faced".
Deliveries remain frozen until regulators approve the MAX's return to service. The stock had gained 1.9 per cent to close at $359.