37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
Attributes | |
ACN | 422258 |
Time | |
Date | 199812 |
Day | Tue |
Local Time Of Day | 1201 To 1800 |
Place | |
Locale Reference | atc facility : svm |
State Reference | MI |
Altitude | msl bound lower : 13000 msl bound upper : 13800 |
Environment | |
Flight Conditions | VMC |
Light | Daylight |
Aircraft 1 | |
Operator | common carrier : air taxi |
Make Model Name | Learjet 25 |
Operating Under FAR Part | Part 135 |
Route In Use | departure other departure sid : sid enroute : on vectors |
Flight Plan | IFR |
Person 1 | |
Affiliation | company : air taxi |
Function | flight crew : first officer |
Qualification | pilot : instrument pilot : commercial |
Experience | flight time last 90 days : 80 flight time total : 4030 flight time type : 1300 |
ASRS Report | 422258 |
Person 2 | |
Affiliation | company : air taxi |
Function | flight crew : captain oversight : pic |
Qualification | pilot : cfi pilot : instrument pilot : commercial |
Experience | flight time last 90 days : 200 flight time total : 12800 flight time type : 3000 |
ASRS Report | 422380 |
Events | |
Anomaly | altitude deviation : overshoot non adherence : far |
Independent Detector | other controllera other flight crewa |
Resolutory Action | other |
Consequence | Other |
Supplementary | |
Air Traffic Incident | Pilot Deviation |
Narrative:
Climbing to assigned 13000 ft, captain overshot and momentarily hit 13800 ft while distraction by first officer's (my) incorrect tuning of navigation frequency needed to intercept J70. I thought we were receiving pmm when, in fact, it was too far away to receive. Confusion caused by the fact that I misread a DME indication. Only later did I discover that on this airplane DME has its own receiver, not slaved to navigation. This incident could have been avoided had I taken a moment to review the aircraft navigation system more thoroughly. Callback conversation with reporter revealed the following information: reporter states that the avionics in their fleet of LR25's and falcon jets are all configured differently. This particular aircraft had the capability of tuning one DME with the VOR and another DME with a separate tuning head. He was looking at the wrong DME while trying to navigation to the tuned VOR station. The reporter also states that the fleet is about to undergo a complete avionics review for standardization.
Original NASA ASRS Text
Title: LR25 OVERSHOT ALT ON CLB WHEN FLC IS DISTR BY NAV PROB IN ZOB AIRSPACE.
Narrative: CLBING TO ASSIGNED 13000 FT, CAPT OVERSHOT AND MOMENTARILY HIT 13800 FT WHILE DISTR BY FO'S (MY) INCORRECT TUNING OF NAV FREQ NEEDED TO INTERCEPT J70. I THOUGHT WE WERE RECEIVING PMM WHEN, IN FACT, IT WAS TOO FAR AWAY TO RECEIVE. CONFUSION CAUSED BY THE FACT THAT I MISREAD A DME INDICATION. ONLY LATER DID I DISCOVER THAT ON THIS AIRPLANE DME HAS ITS OWN RECEIVER, NOT SLAVED TO NAV. THIS INCIDENT COULD HAVE BEEN AVOIDED HAD I TAKEN A MOMENT TO REVIEW THE ACFT NAV SYS MORE THOROUGHLY. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR STATES THAT THE AVIONICS IN THEIR FLEET OF LR25'S AND FALCON JETS ARE ALL CONFIGURED DIFFERENTLY. THIS PARTICULAR ACFT HAD THE CAPABILITY OF TUNING ONE DME WITH THE VOR AND ANOTHER DME WITH A SEPARATE TUNING HEAD. HE WAS LOOKING AT THE WRONG DME WHILE TRYING TO NAV TO THE TUNED VOR STATION. THE RPTR ALSO STATES THAT THE FLEET IS ABOUT TO UNDERGO A COMPLETE AVIONICS REVIEW FOR STANDARDIZATION.
Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.