# NTSB DEN78DTM16: Aerospatial SA315B, N220RM, Nmanila, UT, March 22, 1978

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: March 22, 1978
- Place: Nmanila, UT · NMANILA, UT
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 4 uninjured
- Status: Completed, report May 1, 1977
- Report: Brief approved by the director
- NTSB case key (mKey): 142780
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN78DTM16
- Page: https://openairdocs.org/ntsb/DEN78DTM16

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-0610  78/3/22  NR.NMANILA,UT         AEROSPATIAL SA315B  CR-  0  0  1  COMMERCIAL                COMMERCIAL, AGE 26, 5628
        TIME - 1340                    N220RM              PX-  0  0  3  CTR PASSG-D               TOTAL HOURS, 2031 IN
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            TYPE, NOT INSTRUMENT
                                                                                                   RATED.
        DEPARTURE POINT             INTENDED DESTINATION         LAST ENROUTE STOP
         NMANILA,UT                  NMANILA,UT                    MOUNTAIN SURVEY SITE
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            LANDING: FINAL APPROACH
           HARD LANDING                                             LANDING: POWER-OFF AUTOROTATIVE LANDING
        PROBABLE CAUSE(S)
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: INADEQUATE MAINTENANCE AND INSPECTION
           POWERPLANT - ENGINE INSTALLATION: OTHER
           MISCELLANEOUS ACTS,CONDITIONS - IMPROPERLY INSTALLED
        FACTOR(S)
           TERRAIN - SNOW-COVERED
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        REMARKS- ENGINE AIR INTAKE SILENCER P/N 1160-55-40-001-11 INSTALLED IMPROPERLY.
```

## Aircraft

- Registration: N220RM (not matched to a registry record)
- Reported make and model: AEROSPATIAL SA315B
- Category: Helicopter
- Engines: turbo shaft
- Damage: Substantial damage

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 19780322005819A](https://openairdocs.org/incident/19780322005819A), Mar 22, 1978: Aerosp SA315B, Nmanila, UT, Substantial damage. Engine air intake silencer p/n 1160-55-40-001-11 installed improp.

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.