The most obvious external difference of the new build Seneca IV compared to its forebears are the circular axisymmetric cowling inlets, a feature Piper has been introducing across its new product range.

Airtest — Piper Seneca

Piper Seneca IV

Piper is back in business, out of bankruptcy and producing aeroplanes again.

One of the most important models to be rejuvenated is the six-seat Seneca. This, general aviation’s most popular light twin for many years, will be reincarnated with a few, mainly superficial, improvements as the Seneca IV. The company calls this ‘Redefining a Legend’ and it represents the renaissance product of a manufacturer with new resolve. Being smart, Piper knows better than to tamper much with a winning formula, so alterations are minimal. The most obvious changes are the small circular axisymmetric cowling inlets, developed by NASA with the Mississippi State University. These trendy half-sized intakes are claimed to reduce drag while improving cooling but, sensibly, no performance credit has been published because of the penalising certification costs.

Other improvements include a big ‘user-friendly’ metal instrument panel with a high level of standard equipment, but still with plenty of room for extras. This incorporates improved engine instrumentation, a comprehensive annunciator panel and back-lit switches. The extensive Bendix/King avionics suite includes twin nav/coms (both with glideslope), DME, ADF, encoding transponder and a KLN-90 GPS. Surprisingly, a six-place intercom is not included, but a two-axis autopilot/flight director is. The aircraft I flew also sported the optional weather radar, served by a miniature scanner in its nose cone, co-pilot’s instruments and a Skyforce Locator moving map display.

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