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Pilot of SC7 on parachute drop mission at FL230 has altdevs and heading deviations exacerbated by oxygen deprivation and mechanical difficulties.
| Attributes | |
| ACN | 607697 |
| Time | |
| Date | 200402 |
| Day | Thu |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : e60.airport |
| State Reference | AZ |
| Altitude | msl single value : 23000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zab.artcc |
| Operator | common carrier : charter |
| Make Model Name | Shorts SC7 Skyvan 3/3M |
| Operating Under FAR Part | other : 105 |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : charter |
| Function | flight crew : single pilot |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 250 flight time total : 7700 flight time type : 550 |
| ASRS Report | 607697 |
| Person 2 | |
| Affiliation | other |
| Function | observation : passenger |
| Events | |
| Anomaly | aircraft equipment problem : less severe altitude deviation : excursion from assigned altitude non adherence : clearance non adherence : far other anomaly other spatial deviation |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : overcame equipment problem flight crew : exited adverse environment flight crew : regained aircraft control flight crew : became reoriented |
| Consequence | other other |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance Aircraft Company Environmental Factor |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
On an IFR flight plan, I missed altitude and heading assignments while dropping skydivers over airport. I was distraction with mechanical operating difficulties and possibly hypoxic. 1) stuck full throttle #2 engine. 2) altitude error. 3) oxygen system inadequacies. 4) delays above 17500 ft MSL. Implemented corrections as follows: 1) repairing mechanical defects. 2) recalibrating altimeter. 3) a more effective oxygen breathing system will be utilized in the future. 4) delays will be anticipated. 5) declare an emergency.
Original NASA ASRS Text
Title: PLT OF SC7 ON PARACHUTE DROP MISSION AT FL230 HAS ALTDEVS AND HDG DEVS EXACERBATED BY OXYGEN DEPRIVATION AND MECHANICAL DIFFICULTIES.
Narrative: ON AN IFR FLT PLAN, I MISSED ALT AND HDG ASSIGNMENTS WHILE DROPPING SKYDIVERS OVER ARPT. I WAS DISTR WITH MECHANICAL OPERATING DIFFICULTIES AND POSSIBLY HYPOXIC. 1) STUCK FULL THROTTLE #2 ENG. 2) ALT ERROR. 3) OXYGEN SYS INADEQUACIES. 4) DELAYS ABOVE 17500 FT MSL. IMPLEMENTED CORRECTIONS AS FOLLOWS: 1) REPAIRING MECHANICAL DEFECTS. 2) RECALIBRATING ALTIMETER. 3) A MORE EFFECTIVE OXYGEN BREATHING SYS WILL BE UTILIZED IN THE FUTURE. 4) DELAYS WILL BE ANTICIPATED. 5) DECLARE AN EMER.
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.