squawk_box

Is ADS-B In Helping?

There probably are few pilots in the U.S. who arent aware of ADS-B and its In and Out flavors. The traffic and weather services ADS-B In brings to the cockpit have proven popular and inexpensive, portable receivers used with consumer-grade tablet computers have proliferated along with panel-installed equipment to bring enhanced situational awareness to even the lowliest cockpit. Yes, the data and information available through ADS-B In is for advisory purposes only-it cant be used in lieu of airborne radar or collision-avoidance equipment required by operating rules.

Buddy System

Normally, I might have panicked, but with my experienced copilot at my side, I stayed calm. We talked through our options and decisions along as I continued to fly the plane. I began a series of small adjustments to the throttle and mixture to see how the engine responded. We quickly discovered these changes only made matters worse, so we left the settings as is. My buddy reminded me to stay high-altitude is our friend-and we looked for landing spots in case things deteriorated.

A New Homebuilt And Rusty Pilots

They expressed their nervousness, which was understandable. Who wants to show their flight skills to a critic when those skills are at low proficiency? It is human nature to want to show your best side, but a rusty pilot flight review will show the naked truth. I explained there is nothing wrong with being out of practice, and a flight review is not a test, but an opportunity to learn. Their anxiety acknowledged, we moved on to the needed practice.

Air Filters

Receiving inspection of new air filters (p/n P107336) revealed three out of four had a defective sealing surface, causing the sealing/mating surface to crack and crumble. This defective sealing surface could potentially enter the engine. The defective filters sealing surface has a light-gray color while the replacement filters we received, inspected and found to be in serviceable condition had a dark gray, almost black sealing surface. Suspect that the defective filters had improper material on the sealing surface or were improperly cured.

Runway Incursions

There once was a time when piston singles were more prevalent at the Washington Dulles International Airport than they are today, and one evening I was in one of them, coming or going, on the ground control frequency. Another light airplane called for taxi clearance and, based on its position, was routed to a departure runway as far away as humanly possible from its parking spot. The pilot responded, Uh, ground, that looks kind of far; do you mind if we just fly over there?

NTSB Reports

Radar data depicted the airplane flying northerly until about 1138, when it initiated a right turn to the south at about 400 feet msl. Witnesses then saw the airplane turn right to a westerly or northwesterly direction over land while radar depicted the airplane descending to about 200 feet msl. The airplane banked sharply left, and one witness observed the banner twist and separate. The airplane then banked to the right and impacted a 19-story condominium near its top floor. The airplane fell to the second floor deck and came to rest on its left side. Witnesses described the engine sound as either sputtering, operating normally or being at a low throttle setting.

Superior Pulls Engines From Service

When we first learned of the breadth of the detonation problem, we contacted XP-400 engine owners and paid to have them ship their engines to our facility for evaluation, Superiors Bill Ross told sister publication Kitplanes. We disassembled, inspected and tested the key components in each engine, he said, but even after adjusting the ignition timing specification, the results were still unsatisfactory. In response, the company decided to ground affected engines and create a buyback program.

Losing Attitude

All other things being equal, one of the benefits of a primary flight display (PFD, which presents flight instrumentation on an electronic panel) is its use of a solid-state attitude and heading reference system, sometimes known as an AHARS. By using an AHARS to determine which side is up and in which direction the airplane is pointed, the vacuum-driven system is avoided and usually only an electrical system failure or failure of the display itself can eliminate the flight instruments. (Certification rules require backup flight instruments when a PFD is present but not when steam gauges are energized by a vacuum pump.)

Bad Bushings

Found damage on shock absorber assembly. Damage caused from the top boss contacting the shaft shock absorber shaft. The bushing was discovered missing on three aircraft at the same flight school. The manufacturer was notified of damage, affected parts replaced and the aircraft was returned to service. The quality/airworthiness department is currently reviewing work orders in an effort to isolate aircraft affected by this missing bushing. All three aircraft with missing bushings had between 1300 and 1400 hours total time.

Cockpit Communication

I recently had the chance to chat with a long-time friend and pilot about some issues he had with an instructor while working through a flight review. The friend was concerned about the instructors critique of his flying, which included comments like, I didnt expect you to do that, and I would have done it differently. The friend wasnt necessarily complaining about the critique itself but the after-the-fact manner in which it was supplied. Ultimately, it undermined his confidence and he chose not to fly with that instructor again, taking his chances with someone different.

NTSB Reports

Upon raising the landing gear after takeoff, the gear motor continued to operate longer than normal, and the pilot heard an abnormal sound toward the end of the sequence. The right main gear was hanging at about a 45-degree angle, and the left main gear was not visible. The pilot completed the appropriate checklists, without change. The pilot declared an emergency and ATC confirmed during a fly-by that the main gear was not extended. During the landing, the nose gear remained extended and the two main gear were retracted. The airplane came to rest on the runway and the passengers egressed without further incident.

Autopilots

While in IFR cruise at 4000 feet, the pilot observed the flight director command bars move out of view as the airplane started a gradual descent. When the pilot corrected, the electric trim started to run nose down and the aircrafts descent rate increased. The pilot attempted to disconnect the autopilot and trim with the control switches and the red disconnect switch. None of this had any effect. With the turbulence and conditions, the pilot was unable to reach the autopilot and electric trim circuit breakers. After all other remedial procedures had failed, he shut off the avionics master switch at about 1000 feet and recovered the airplane at about 500 feet.